Hi Eric I am in a similar situation. I run about 32 tanks and am currently using 4 smaller pumps. I used to use three with enough air but as the pumps aged and needed new diaphragms, the output reduced. I do keep a couple spares but it's a pain in the butt to pull them out, so I let the air reduce to too low a level before replacing and repairing the old pump. I don't want to go the blower route either, so the pump you bought sounds ideal. Do you know a source and the name and model number of the pump you bought? Do they have accessible replacement parts? Do you know how reliable they are? Thanks Tom Wojtech ------------------------------------------------------------------------- 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"!