hi all first of all Merry Christmas to you all! I just got a few used tank from a store and noticed that one of them has part of the glass tinted in yellow-green. Would you know of ay fish-used medication that would have that result? I am just concerned about any trace being released in the water. I tried to scrub it off but it stays. thanks for any advise. Yvan Alleau 450 SE Atwood Ave Corvallis, OR 97333 (541) 752-0320 College of Oceanic and Atmospheric Sciences Oregon State University Burt 222: (541) 737-3649 "When you're far from everything, you're getting closer to the essential" ------------------------------------------------------------------------- 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. apisto-digest@listbox.com also available. Web archives at http://lists.thekrib.com/apisto Trading at http://blox.dropship.org/mailman/listinfo/apisto_trader