
API Freshwater Master Test Kit, Aquarium Water 850 Test Kit
Key item features
- Contains one (1) API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, including 7 bottles of testing solutions, 1 color card and 4 plastic tubes with cap
- Helps monitor water quality and prevent invisible water problems that can be harmful to fish and cause fish loss
- Accurately monitors 5 most vital water parameters levels in freshwater aquariums: pH, high range pH, ammonia, nitrite, nitrate
- Designed for use in freshwater aquariums only
- Use for weekly monitoring and when water or fish problems appear
Specs
- FeaturesAccurate
- Count12
- Product lineFRESHWATER MASTER TEST KIT
- Rec. useAt-Home
Reviews summary
- : Offers affordable water testing options.
- : Simple operation with minimal guidance required.
- Free shipping
Free 90-day returns
How do you want your item?
Similar items you might like
Based on what customers bought
GENERAL/CARBONATE HARDNESS KIT $11.84
$1184current price $11.84GENERAL/CARBONATE HARDNESS KIT
74.6 out of 5 Stars. 7 reviewsSave withShipping, arrives tomorrowBest seller Tetra 5-in-1 EasyStrips Accurate Aquarium Test Kit, for Freshwater and Saltwater, 25 Count $13.24
Best seller
4 optionsAvailable in additional 4 options$1324current price $13.24Options from $13.24 – $52.96Tetra 5-in-1 EasyStrips Accurate Aquarium Test Kit, for Freshwater and Saltwater, 25 Count
1654.6 out of 5 Stars. 165 reviewsSave withPickup todayDelivery todayShipping, arrives todayFluval Master Test Kit for Aquarium Water, Freshwater & Saltwater Fish Tank Test Master Kit $35.99
$3599current price $35.99Fluval Master Test Kit for Aquarium Water, Freshwater & Saltwater Fish Tank Test Master Kit
Shipping, arrives in 3+ daysFRESHWATER PH TEST KIT $10.00
$1000current price $10.00FRESHWATER PH TEST KIT
174.4 out of 5 Stars. 17 reviewsSave withShipping, arrives tomorrowHvxrjkn 100Pcs Aquarium Test Strips 9 in 1 Fish Tank Test Kit with Test Tube Fast Aquarium Water Testing Strips for Iron Copper Nitrate Nitrite Free Chlorine Hardness Carbonate pH $10.89
$1089current price $10.89Hvxrjkn 100Pcs Aquarium Test Strips 9 in 1 Fish Tank Test Kit with Test Tube Fast Aquarium Water Testing Strips for Iron Copper Nitrate Nitrite Free Chlorine Hardness Carbonate pH
95 out of 5 Stars. 9 reviewsSave withShipping, arrives tomorrowAPI Ammonia Aquarium Test Strips (25ct) $18.98
2 optionsAvailable in additional 2 options$1898current price $18.98API Ammonia Aquarium Test Strips (25ct)
54.2 out of 5 Stars. 5 reviewsShipping, arrives in 3+ daysTetra EasyStrips 6-in-1 Aquarium Test Strips, Water Testing $13.83 34.8 ¢/ea
$1383current price $13.8334.8 ¢/eaTetra EasyStrips 6-in-1 Aquarium Test Strips, Water Testing
643.4 out of 5 Stars. 64 reviewsSave withShipping, arrives tomorrowClearance Up to 50% Off, Dvkptbk PH Tester Tropical Aquarium Cold Water Fish Tank Testing Kit 80 TEST STRIPS $5.63 Was $6.99
Clearance
Now$563current price Now $5.63, Was $6.99$6.99You save $1.36You save$1.36Up to 50% Off, Dvkptbk PH Tester Tropical Aquarium Cold Water Fish Tank Testing Kit 80 TEST STRIPS
11 out of 5 Stars. 1 reviewsShipping, arrives in 3+ days100Pcs 7 In 1 Aquarium Fish Tank Water Tropical Test Strips Kit $13.51
$1351current price $13.51100Pcs 7 In 1 Aquarium Fish Tank Water Tropical Test Strips Kit
Shipping, arrives in 3+ daysAPI Replacement Test Tubes $23.42 Was $26.09
Now$2342current price Now $23.42, Was $26.09$26.09You save $2.67You save$2.67API Replacement Test Tubes
133 out of 5 Stars. 13 reviewsSave withShipping, arrives tomorrowAPI Ammonia Test Kit $19.78
$1978current price $19.78API Ammonia Test Kit
134.2 out of 5 Stars. 13 reviewsShipping, arrives in 3+ days7 in 1 Aquarium Test Strips, 100 Strips Fish Tank Test Kit, Pool Test Strips, Freshwater Saltwater Aquarium Water Test Kit to Detect $13.59
$1359current price $13.597 in 1 Aquarium Test Strips, 100 Strips Fish Tank Test Kit, Pool Test Strips, Freshwater Saltwater Aquarium Water Test Kit to Detect
Shipping, arrives in 3+ daysBANIRO 7 In 1 Aquarium Test Kit Pond Fish Tank Test Fresh Water Salt Water Test Strips $8.26
$826current price $8.26BANIRO 7 In 1 Aquarium Test Kit Pond Fish Tank Test Fresh Water Salt Water Test Strips
Shipping, arrives in 3+ days7 in 1 Water Test Strips Kit for Aquarium Fish Tank Pond Pool Drinking Water with pH Hardness Nitrate Nitrite Testing 50 Strips $16.54
$1654current price $16.547 in 1 Water Test Strips Kit for Aquarium Fish Tank Pond Pool Drinking Water with pH Hardness Nitrate Nitrite Testing 50 Strips
Shipping, arrives in 3+ days5 IN 1 TEST STRIPS, 25 COUNT $12.98 Was $15.69
Now$1298current price Now $12.98, Was $15.69$15.69You save $2.71You save$2.715 IN 1 TEST STRIPS, 25 COUNT
114 out of 5 Stars. 11 reviewsSave withShipping, arrives tomorrowDigital Meter 0-9990ppm Water Tester Aquariums Filter Monitors $33.02 Was $50.00
Now$3302current price Now $33.02, Was $50.00$50.00You save $16.98You save$16.98Digital Meter 0-9990ppm Water Tester Aquariums Filter Monitors
Shipping, arrives in 3+ daysMars Fishcare Freshwater Master Test Kit - 34 $49.55
$4955current price $49.55Mars Fishcare Freshwater Master Test Kit - 34
Shipping, arrives in 3+ days
About this item
Product details
- Contains one (1) API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, including 7 bottles of testing solutions, 1 color card and 4 plastic tubes with cap
- Helps monitor water quality and prevent invisible water problems that can be harmful to fish and cause fish loss
- Accurately monitors 5 most vital water parameters levels in freshwater aquariums: pH, high range pH, ammonia, nitrite, nitrate
- Designed for use in freshwater aquariums only
- Use for weekly monitoring and when water or fish problems appear
Specifications
Features
Count
Product line
Rec. use
Directions
Instructions
Warranty
Warranty information
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Popular items in this category
Best selling items that customers love
API Nitrite Test Kit, Freshwater and Saltwater Aquarium Test Kit, 180 Tests $17.98
$1798current price $17.98API Nitrite Test Kit, Freshwater and Saltwater Aquarium Test Kit, 180 Tests
24.5 out of 5 Stars. 2 reviewsShipping, arrives in 3+ daysAPI 5-in-1 Test Strips Freshwater & Saltwater Aquarium Test Strips 100 Count $25.62
$2562current price $25.62API 5-in-1 Test Strips Freshwater & Saltwater Aquarium Test Strips 100 Count
85 out of 5 Stars. 8 reviewsShipping, arrives in 3+ daysAPI Nitrate Test Kit Fresh & Salt Water $15.49
$1549current price $15.49API Nitrate Test Kit Fresh & Salt Water
84.4 out of 5 Stars. 8 reviewsShipping, arrives in 3+ daysAPI 5 in 1 Aquarium Test Strips with - 4 Strips $11.80 $2.95/ea
$1180current price $11.80$2.95/eaAPI 5 in 1 Aquarium Test Strips with - 4 Strips
34.7 out of 5 Stars. 3 reviewsSave withShipping, arrives tomorrowAquarium Pharmaceuticals pH Test and Adjuster Kit for Freshwater Aquariums $12.99
2 optionsAvailable in additional 2 options$1299current price $12.99Aquarium Pharmaceuticals pH Test and Adjuster Kit for Freshwater Aquariums
124.8 out of 5 Stars. 12 reviewsSave withShipping, arrives tomorrowAPI PondCare Pond Master Test Kit Liquid Water Conditioner Fast Easy Accurate $29.95 Was $36.69
Now$2995current price Now $29.95, Was $36.69$36.69You save $6.74You save$6.74API PondCare Pond Master Test Kit Liquid Water Conditioner Fast Easy Accurate
94.9 out of 5 Stars. 9 reviewsSave withShipping, arrives tomorrowAAwipes Ammonia Test Strips for Fish Tank Aquarium Test Strips Aquarium Water Test Kit Freshwater Fish Tank (150) $19.98
3 optionsAvailable in additional 3 options$1998current price $19.98AAwipes Ammonia Test Strips for Fish Tank Aquarium Test Strips Aquarium Water Test Kit Freshwater Fish Tank (150)
14 out of 5 Stars. 1 reviewsShipping, arrives in 3+ daysSalifert KH/Alkalinity Aquarium Test Kit $20.05
$2005current price $20.05Salifert KH/Alkalinity Aquarium Test Kit
Shipping, arrives in 3+ daysSalifert - Phosphate (PO4) Test Kit $21.39
$2139current price $21.39Salifert - Phosphate (PO4) Test Kit
Shipping, arrives in 3+ daysAPI Co2 Booster, Freshwater Aquarium Plant Treatment, 16 oz $14.68
$1468current price $14.68API Co2 Booster, Freshwater Aquarium Plant Treatment, 16 oz
84.8 out of 5 Stars. 8 reviewsSave withShipping, arrives tomorrowDuety Aquarium Test Stripsé”›?00 Strips Aquarium Testing Kit For Freshwater Saltwateré”›?Pond Test Strips For Fish Tank Testing Phé”›?Alkalinityé”›?Nitrite $8.62
3 optionsAvailable in additional 3 options$862current price $8.62Options from $8.62 – $9.89Duety Aquarium Test Strips锛?00 Strips Aquarium Testing Kit For Freshwater Saltwater锛?Pond Test Strips For Fish Tank Testing Ph锛?Alkalinity锛?Nitrite
204.2 out of 5 Stars. 20 reviewsShipping, arrives in 3+ daysAPI Saltwater Master Test Kit, Aquarium Water Test Kit, 550 Tests $41.42
2 optionsAvailable in additional 2 options$4142current price $41.42+$9.98 shippingAPI Saltwater Master Test Kit, Aquarium Water Test Kit, 550 Tests
65 out of 5 Stars. 6 reviewsShipping, arrives in 3+ daysAPI Tap Water Conditioner - 32 fl oz $24.51
$2451current price $24.51API Tap Water Conditioner - 32 fl oz
234.6 out of 5 Stars. 23 reviewsSave withShipping, arrives tomorrowAPI Tap Water Conditioner, Aquarium Water Conditioner, 8 oz $13.98
$1398current price $13.98API Tap Water Conditioner, Aquarium Water Conditioner, 8 oz
164.9 out of 5 Stars. 16 reviewsSave withShipping, arrives tomorrowAPI Stress Coat Fish & Tap Water Conditioner 64 oz - (Treats 3,840 Gallons) $33.48
$3348current price $33.48API Stress Coat Fish & Tap Water Conditioner 64 oz - (Treats 3,840 Gallons)
314.7 out of 5 Stars. 31 reviewsSave withShipping, arrives tomorrowAPI Stress Coat, Aquarium Water Conditioner, 4 oz $8.66 $2.17/fl oz
$866current price $8.66$2.17/fl ozAPI Stress Coat, Aquarium Water Conditioner, 4 oz
414.8 out of 5 Stars. 41 reviewsSave withShipping, arrives tomorrowAqueon Ammonia Aquarium Test Strips 50 Count $17.79
2 optionsAvailable in additional 2 options$1779current price $17.79Aqueon Ammonia Aquarium Test Strips 50 Count
Shipping, arrives in 3+ daysSixwipe 7 in 1 Aquarium Test Strips, 100 Strips Fish Tank Test Kit, Pool Test Strips, Freshwater Saltwater Aquarium Water Test Kit to Detect, Alkalinity, Nitrite, Nitrate, Chlorine $9.10
$910current price $9.10Sixwipe 7 in 1 Aquarium Test Strips, 100 Strips Fish Tank Test Kit, Pool Test Strips, Freshwater Saltwater Aquarium Water Test Kit to Detect, Alkalinity, Nitrite, Nitrate, Chlorine
524.5 out of 5 Stars. 52 reviewsSave withShipping, arrives tomorrow
Frequently bought together
API Freshwater Master Test Kit, Aquarium Water 850 Test Kit $39.62

API Freshwater Master Test Kit, Aquarium Water 850 Test Kit
API Quick Start, Freshwater And Saltwater Aquarium Nitrifying Bacteria, 4 oz $11.85 $2.96/fl oz

API Quick Start, Freshwater And Saltwater Aquarium Nitrifying Bacteria, 4 oz
Lychee 5 in 1 Fish Tank Cleaner Aquarium Cleaning Set Fish Net Siphon Gravel Cleaner Algae Scrubber Scraper Glass Cleaner Tool Kit Blue and Black $10.98

Lychee 5 in 1 Fish Tank Cleaner Aquarium Cleaning Set Fish Net Siphon Gravel Cleaner Algae Scrubber Scraper Glass Cleaner Tool Kit Blue and Black
Customer ratings & reviews
Reviews summary
- : Offers affordable water testing options.
- : Simple operation with minimal guidance required.
Customer images
Showing 1-3 of 32 reviews
Verified Purchase
API Testing is a great kit.
I was using another brand dry strips (not impressed) %26 read to try API Master Kit. A big difference. Company does great job explaining why you do the specific tests %26 how to do each test. I very much like on each solution it again lists how many drops you need. Very nice case for test bottles %26 drops. Will buy again.
Verified Purchase
The only accurate test kit for freshwater aquariums, it really helped me see the problems with my water quality that strips tests missed.
Verified Purchase
Excellent test kit
This is a great test kit. I tested my tap water, my distilled water and the water in my turtle tank for 2 weeks. As you can see only the distilled passed the PH test. The tap and turtle tank water did not. Upon researching why this could be, it seems to be due to the water treatment. I have a nice one gallon counter distiller for my drinking water, tea, coffee, cereal. It would be impossible to distill 75 gallons from that for the turtle tank so I will be looking for other methods. The ammonia is kept down in the tank by activated carbon pellets (first test photo) but dissipates naturally in the storage bottles used for the feeding container and replacing the evaporated from tank daily.
More items to consider
Based on what customers bought
Fritz Fishless Fuel Ammonia Solution 2 oz $9.99
$999current price $9.99Fritz Fishless Fuel Ammonia Solution 2 oz
25 out of 5 Stars. 2 reviewsShipping, arrives in 3+ daysBest seller Aquarium Thermometer, Wireless Digital Aquarium Thermometer Fish Tank Thermometer ±0.18°F High Precision LED HD Display Aquarium Thermometer for Fish Axolotl Turtle Aquatic Pet Plants 2PCS $10.99
Sponsored$1099current price $10.99Options from $10.99 – $11.69Aquarium Thermometer, Wireless Digital Aquarium Thermometer Fish Tank Thermometer ±0.18°F High Precision LED HD Display Aquarium Thermometer for Fish Axolotl Turtle Aquatic Pet Plants 2PCS
374.4 out of 5 Stars. 37 reviewsSave withShipping, arrives in 2 daysSeachem Prime - Concentrated Conditioner For Marine & Freshwater 11-Ounce $16.35 Was $21.31
Now$1635current price Now $16.35, Was $21.31$21.31You save $4.96You save$4.96Seachem Prime - Concentrated Conditioner For Marine & Freshwater 11-Ounce
35 out of 5 Stars. 3 reviewsSave withShipping, arrives tomorrowAPI Proper pH Adjuster for Aquariums - pH 7.5 - 260 Gram Jar $17.28
5 optionsAvailable in additional 5 options$1728current price $17.28API Proper pH Adjuster for Aquariums - pH 7.5 - 260 Gram Jar
54 out of 5 Stars. 5 reviewsSave withShipping, arrives tomorrowMarina Floating Thermometer with Suction Cup $7.29
2 optionsAvailable in additional 2 options$729current price $7.29Marina Floating Thermometer with Suction Cup
304.4 out of 5 Stars. 30 reviewsShipping, arrives in 3+ daysAPI Stress Coat, Aquarium Water Conditioner, 32-Ounce $21.88 Was $24.99
2 optionsAvailable in additional 2 optionsNow$2188current price Now $21.88, Was $24.99$24.99You save $3.11You save$3.11More options from $18.69API Stress Coat, Aquarium Water Conditioner, 32-Ounce
704.6 out of 5 Stars. 70 reviewsShipping, arrives in 3+ daysEssential Pet Products FR47515 16 oz Fritz Aquatics Complete Full Spectrum Water Conditioner $18.99
3 optionsAvailable in additional 3 options$1899current price $18.99Essential Pet Products FR47515 16 oz Fritz Aquatics Complete Full Spectrum Water Conditioner
Shipping, arrives in 3+ daysReduced price API Liquid Super Ick Cure Kills Ich Parasite Replace Natural Protective Skin 4oz $6.98 Was $9.99
Reduced price
Now$698current price Now $6.98, Was $9.99$9.99You save $3.01You save$3.01API Liquid Super Ick Cure Kills Ich Parasite Replace Natural Protective Skin 4oz
384.4 out of 5 Stars. 38 reviewsSave withShipping, arrives tomorrowPenn Plax Plastic 16-inch Aquarium Plants, 3-Count Pack, Green, Small 16" $15.89
2 optionsAvailable in additional 2 options$1589current price $15.89Penn Plax Plastic 16-inch Aquarium Plants, 3-Count Pack, Green, Small 16"
224.8 out of 5 Stars. 22 reviewsSave withShipping, arrives tomorrowAquarium pH Up Solution for Healthy Freshwater Fish $8.42
$842current price $8.42Aquarium pH Up Solution for Healthy Freshwater Fish
54.8 out of 5 Stars. 5 reviewsShipping, arrives in 3+ daysSeachem Laboratories PolyGuard Bacterial, Fungal and Parasitic Diseases Treatment ,0.4oz $12.55
$1255current price $12.55Seachem Laboratories PolyGuard Bacterial, Fungal and Parasitic Diseases Treatment ,0.4oz
15 out of 5 Stars. 1 reviewsShipping, arrives in 3+ daysSeachem Prime Fish & Aquatic Life Marine & Freshwater Treatment, 1.7 Oz $13.92 Was $20.74
Now$1392current price Now $13.92, Was $20.74$20.74You save $6.82You save$6.82Seachem Prime Fish & Aquatic Life Marine & Freshwater Treatment, 1.7 Oz
474.9 out of 5 Stars. 47 reviewsSave withShipping, arrives tomorrowTetra Whisper Air Pump for Aquariums up to 10 Gallons, Powerful Airflow, Non-UL Listed, 5.5 in. $17.47
2 optionsAvailable in additional 2 options$1747current price $17.47Tetra Whisper Air Pump for Aquariums up to 10 Gallons, Powerful Airflow, Non-UL Listed, 5.5 in.
2394.6 out of 5 Stars. 239 reviewsSave withShipping, arrives tomorrowTetra Whisper Bio-Bag Unassembled,Disposable Filter Cartridges for Aquariums, Large, 12 Count $14.57
3 optionsAvailable in additional 3 options$1457current price $14.57More options from $12.98Tetra Whisper Bio-Bag Unassembled,Disposable Filter Cartridges for Aquariums, Large, 12 Count
2724.7 out of 5 Stars. 272 reviewsSave withShipping, arrives in 3+ daysStability 250 mL / 8.5 fl. oz. $14.16
$1416current price $14.16Stability 250 mL / 8.5 fl. oz.
105 out of 5 Stars. 10 reviewsShipping, arrives in 3+ daysAPI Aqua Essential All-in-One Concentrated Water Conditioner $9.49
6 optionsAvailable in additional 6 options$949current price $9.49Options from $9.49 – $23.99API Aqua Essential All-in-One Concentrated Water Conditioner
114.3 out of 5 Stars. 11 reviewsShipping, arrives in 3+ daysBest seller Tetra 0.25 oz Tetra Bloodworms Freeze-Dried Fish Food $5.07
Best seller
4 optionsAvailable in additional 4 options$507current price $5.07Options from $5.07 – $19.28Tetra 0.25 oz Tetra Bloodworms Freeze-Dried Fish Food
2214.5 out of 5 Stars. 221 reviewsSave withPickup todayDelivery todayShipping, arrives todayAqueon Plant Food 17.4 Ounces $10.15 58.3 ¢/fl oz
$1015current price $10.1558.3 ¢/fl ozAqueon Plant Food 17.4 Ounces
354.9 out of 5 Stars. 35 reviewsSave withShipping, arrives tomorrow(2 pack) Tetra Correct pH Tablets Aquarium Water Treatment, Maintains Neutral pH, 8 Count $10.04
2 optionsAvailable in additional 2 options$1004current price $10.04(2 pack) Tetra Correct pH Tablets Aquarium Water Treatment, Maintains Neutral pH, 8 Count
1214.5 out of 5 Stars. 121 reviewsSave withShipping, arrives tomorrowAquarian By API Cloudy Water Fix 8 oz. Bottle $7.98
4 optionsAvailable in additional 4 options$798current price $7.98Options from $7.98 – $31.92Aquarian By API Cloudy Water Fix 8 oz. Bottle
1114.3 out of 5 Stars. 111 reviewsSave withPickup todayDelivery todayShipping, arrives today








