Vitakraft Pond Torfin Tabs I've already used in previous dry summers to keep tap water chalky after tapering into the garden pond at low tide algae free. Unfortunately, these practical tabs are in our area no longer commercially! It's great that I now got through Amazon! Our fish and other pond inhabitants will no longer be hindered in this hot summer of 2014 by annoying thread algae but cavort merrily back in plenty of clean water.
