I've kept the carnivorous plant Utricularia gibba in rain barrels as well as the equally carnivorous but somewhat more agressive Gambasia affini to control mosquitoes. Wayne Morrow >I've been using a the same 32 gal Rubbermaid can for aging water --------------- See http://www.aka.org/AKA/subkillietalk.html to unsubscribe Join the AKA at http://www.aka.org/AKA/Applic.htm