L.B. Try this site: http://www.conserving-water.com/docs/hydrosource.html Scroll down to Specifications. You also wrote: "Working on some cheap hoop house ideas" Made my first one this spring when my porch was overrun with seedlings getting leggy & night time temps were still in the 40's. Stopped by Home Depot to make sure I had the right name for the two materials needed. First is CPVC pipe which is more flexible than PVC/ 1/2" X 10' sections are $1.74 each. Second is Clear Poly Sheeting in either 6 MIL or 4 MIL thickness in 10 foot wide by the length you need, 20/50/100 ft. lengths available & costs from $6 to $25. Lastly is keeping hoops standing. My father-in-law is a plumber & he supplied me with 18" lengths of 3/4" junk copper pipe that I drove a foot into the ground at 24" intervals by 4' apart. That spacing provided a 4' high hoop that I plan on putting back on this fall to try to extend season. Other way to keep hoops up is rebar/didn't price that. Lastly is the voice of experience. Believed the weatherman that it was going to be "Mostly cloudy." so I didn't lift end flaps before heading off to work. Returned home to find a blast furnace with 44 dead seedlings (had a temp gauge in soil that read 84F/hate to think what temp inside was) & outside air temp was only 72F. 44 replacement plants producing nicely, Paul ----- Original Message ----- From: "Byron" <byronbromley@tellink.net> To: <chile-heads@globalgarden.com> Sent: Saturday, 11 August, 2001 9:17 AM Subject: [CH] polyacrilimide granules > Dave > > How about checking the label.. > > Goggle search didn't like that spelling > > Nor did they like polyacrylamide > > An agi fact sheet search engine doesn't like either one. > > L.B. > > >