Pappy Here, I have never had any problems at all using Fluke Tabs. I use 1/2 tablet for each ten gallons and the Hydra is dead in only a few minutes. Z Man ----------------------------------------------------------------------- -- 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