Rated 4 out of 5 by 2
Rated 4 out of 5 by NeverBend Seems to work
I have a small pond (~200 gallons) and have to add water every other day (about 10-15 gallons) because of a small leak in the waterfall.
I waited several days for the water to de-calcify before adding live fish (small goldfish - larger feeder types). By the time I started to use Jungle Pond Start most of the weak ones (or susceptible ones) had died (6 in 3 weeks) but since there have only been 2, so it seems to work but it would become pricey if I had to use it all the time (been using this for the past 2 weeks).
The remaining fish were thriving before I started using Jungle Pond so I can't say that it's the reason that the fish are doing well but certainly it isn't hurting. I'd recommend this to anyone that is not seeing their fish feeding actively or if they're doing poorly.