ok that's cool.. I like the idea of alot of water circulation anyways. Sorry for being unclear on the question.. I plan to use them just to move around the water in the main tank.
I'm going to have some sort of sump, still unsure on it, and HOB overflow. In the sump I'll have protein skimmer (Looking at aquaC urchin), heater, and I'm not sure what else if anything as far as equipment goes in the sump. I was thinking about a mag12 for the return?
I'm going to get the 50lbs Fiji and the 25lb Florida live rock, from here of course, to start off. Maybe I'll add more later. For dsb, I'm still not sure on how much I need. I'm thinking 200lbs? I obviously can't afford that much live sand so I was thinking of using aragonite (can't find southdown down here, in the south, would regular clean playsand be ok for some of it?) and seed it with 40lb live keys sand.
So that's basically my filtration setup as I have it visioned now.
Nice thinking on the "ph".. I wonder about myself sometimes :hilarious:
Oh, how would I place say 4 of mj900s in the tank? Evenly spaced against the back glass on top or variate the height from one to another going down?
thanks
cordell