In a message dated 5/8/04 8:36:44 PM, inquartata at comcast_net writes: << Too big, it becomes a trickle filter, and too small might cause overflow problems. >> I used 1/8 inch holes and it works OK. Lee Harper Media, PA To join the AKA see http://www.aka.org/pages/join.html Archives are at http://fins.actwin.com/killietalk/