I've used CLR on my bathroom tiles and tub. It seems to be a concentrated citris acid product, but I'd really do my homework before using it on an aquarium. The stuff ate the old grout out of my bathroom tiles. Takes rust off of things too. At 09:21 AM 5/3/00 -0400, you wrote: >Jerry > >You can remove those deposit by soaking it in distilled vinegar or by >using one of those green scrubby things ( brand new one of course), >soaking it in vinegar and scrubbing the deposits off. I use vinegar to >clean old african rift lake tanks to remove the build up hard water >deposits. It really works well. A little elbow grease goes a long >way, a household product sold in stores called CLR is supposed to do >the same thing, but i dont know if it would be safe for aquarium use or >not. > >John > > > >------------------------------------------------------------------------- >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"! > > ------------------------------------------------------------------------- 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"!