Since I'm pledged with hard tapwater (dissolved calcium carbonate), over the years some of my tanks have built up a lime deposit. I have tried products for aquarium use to treat this but without success. Does anyone have any suggestions as to what products, which are safe, I could use to remedy this problem? Thanks, Jerry F. Kasey kaseyjms@worldnet.att.net ------------------------------------------------------------------------- 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"!