The ammonium being transformed to ammonia as the pH rises is specifically why I add a squirt of Amquel to all acclimation containers as soon as the fish are released into them. With that, I have had great success, the fish seem to do better for it. Zack ------------------------------------------------------------------------- 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.