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>>The algae growth slowed, and then one day
>> the algae just disintegrated and fell off of the plants. This coincided
>> my CO2 going crazy and suddenly dropping the pH from 7.6 to 6.5 and then
>> up to 7.4 in one day.
>When you said it 'disintegrated', was it like a crypt meltdown or did it
>just drop off and floated all over the place? I'm trying to figure out
>the "average" amount of K2SO4 in addition to my current PMDD mix
>(accepting that no two setups are the same). More details please.
The day after I got the pH stablized again, there was a *bunch* of fluffy
olive-colored sediment in the tank. The same stuff I vaccuum out twice a
week along with the fish poop, but a lot more than usual. I looked at the
plants and noticed that most of the evil algae was gone. So I guess it just
kind of dropped off; it was very sudden, after a long slow decline in the
algae. I vacuumed the bottom of the tank every day for a few days (replacing
as little water as possible), did a little happy dance, and declared a