I treated my breeding tank successfully with Fluke tabs before. Ramshorn snails get stressed out in a few days and may foul up the water, though. Does anyone know if fluke tabs are safe to use in a tank with freshwater shrimp? My cherry red shrimp (algae eaters) seem to be breeding and hydras are increasing in numbers. They must be eating the shrimp nauplii. I want to get rid of the hydras, but I am afraid to use Fluke tabs on shrimp. Tomoko ----------------------------------------------------------------------- -- 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