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>At the moment I have a very overgrown tank. Plants floating 8 inches or
>more on the surface, thick etc. I've left them like that because I want to
>trim just before our plant meeting here so that I have nice fresh plants.
>I've recently beaten back a bad algae problem simply by maintaining a good
>fertilization schedule and there is now very little in there. Last night
>struck me that taking out a massive amount of plants all at once might
>destabilize the tank so that I get algae living off the nutrients again.
>I've never really given this any thought before and perhaps things don't
>work this way so I'd appreciate some thoughts on this.
>Questions: I have been dosing 6 ml of PMDD everyday without fail. Should I
>cut back when the plants are heavily trimmed to perhaps half (3 ml) and
>then slowly increase as the plants recover? More to the point I suppose --
>Is this something for concern? Does plant growth work this way? Do more
>leaves = more nutrient uptake and requirements. Please post your thoughts
>as soon as possible as I'd like to know what other's think by Saturday.
>determined NOT to nourish algae.

I have been thinking about the same thing for the same reasons. My
conclusion is
not to fertilize at all (PMDD) for a few days. The large plant mass will
rapidly clean out
the water of nutrients (if the light is adequate). Once you pull the plants
out, carefully
start up the PMDD regimen again. 

Michael Eckardt - mike at odg_com
Ontario Drive & Gear Limited - http://www.odg.com
New Hamburg , ONT - 519-662-2840