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[APD] Re: BGA
I have BGA growing profusely in a planted fry grow-out tank. The fish grow
well but the plants do not; their main purpose in life seems to be to
provide a surface for the BGA to grow.
I like this tank because I don't have to worry about the BGA. It is kind
of pretty if you like bluish-tinted plants, and the BGA produces a lot of
oxygen. The fish graze on it.
It (and the massive growth of duckweed that I do have to
harvest every now and then) also consume nutrients. There are about 40 half
inch fry in this 10 gallon tank, and today I found the nitrates to be about
1 ppm, if that. Just for the heck of it I added some KNO3 to get the
nitrates up to the mid-teens, and removed some of the BGA, just to see what
would happen. Phosphates are OK.
A similar tank immediately adjacent to that one also has very low nitrates
but no BGA at all, that I can see. It has a other kinds of algae, though.
I'm sure that water from the infested tank has got into the other one, but
the BGA hasn't taken root there, as it were.
I get KNO3 from a local farm and building supply store. I pay about .$90 a
pound with no questions asked. The owner suggested that I not order a
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