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2 reviews | 5 out of 5
I have found these testing strips to be very useful. I was skeptical at first because of the price, but I figured it would be well worth it for my fish tank. The strips work very well. It's not so much of an estimation since the only real estimates are if your ammonia levels are really high, in which case, it does not matter. They give you quick results and are accurate as long as you do everything correctly. Great product!
Works well, and a great price.