brains do better on the substrate, and as for lighting you are good. i kept my brain under t5's and it actually coloured up really nicely
this is when i first got it... i did not keep it on the rock
and this is about a month later...
and this is about a month after the second pic....
I have one that I've kept for about 10 years now. At first it was in a 75 gallon under 2 x 250w 10k bulbs and it looked miserable; shriveled from too much light I suppose. Under T5 it looks great. I keep it at the bottom of a barebottom 50 gallon under 5x39w T5s.
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