After reading the responses to my query, I have decided it will be much simpler to toss the central filter idea out the window. I was planning on having the sump tank filled with plants and a UG filter so that the water would be crystal clean. But by having the tanks planted already, I guess I have overkill. I would probably have to fertilize more often. I think I'll stick with the three tanks, and have just one strip light running over all of them. That will save energy, and outlet space as well. Thanks everyone. Jason Miller ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!