Quote:
Originally Posted by Generals
when growing HC emersed, is it really necessary to place a lid or cover on top of the tank?
also, i wanted to ask your knowhow guys.
what are the factors that affect the HC growing tall and skinny rather than creeping on the substrate?
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I put a lid on mine but make sure to keep an eye on the temp inside the tank depending on what type of lighting you are using. I made the mistake of putting a metal halide a few feet above it and the temps were well over 100 in a few hours. Also make sure you dont have any prolonged periods of no light, all my hc melted when the light accidentally was unplugged for a few days.