Wow!!! I have wanted a crocea again since I lost mine a few years back. Had it about 10years. Loved it. They are the most demanding of light. I did keep mine on the sandbed (although, they are rock burrowers) under metal halides. 250W, 10" off water, 24" water. They usually received about 100 to 140PAR. At least when I measured it.
I got mine already full grown at 6" but like I said had it a long time. I wish longer. So, I could keep mine on sandbed.
Good luck!!!
I got mine already full grown at 6" but like I said had it a long time. I wish longer. So, I could keep mine on sandbed.
Good luck!!!