in the case of a single 6000 or 6100 would you then do the 7091 (the single controller)
im looking to replace 4 x 620's seio's, and a maxi jet prop mod'ed powerhead
i have one torch coral, one open bran, one closed, mushrooms, polyps, two monti caps, 3 sps colonies, and some small sps frags.
the substrate is a mixture of finer and larger particles, with mostly larger particle stuff up top (1/4 - 1/2 inch big stuff)