Ok I was just considering starting a centralized system up here in Cincinnati, In fact I've gotten all of the drilled tanks, and bulk heads and was ready to set everything in motion, until I talked to several friends and we discussed the problems with freshwater Centralized systems... the biggest is I breed Tanganyikan Cichlids.. I know you're an apisto guy.. but the main problem is that, a lot of F0 fish contain unknown untreatable diseases... which I deal with sometimes... and that can spread like wild fire... UNLESS.. you use UV sterilzers... which I'd recommend... and another factor is that I've heard of UV sterilzers bringing down the immune system of fish too... over generations... or over a long period of time... I haven't read every single posting of this thread.. I just wanted to give you my input.. Chris ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@majordomo.pobox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@majordomo.pobox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!