David C.-I use the duct jacks for installing commercial exhaust hoods which is what I specialize in. Still a tin banger, but not A/C.

The PVC tree idea came from a prev. post. I sat down and had a corona and got to cyphering how to build one. Several coronas later thats what I came up with.

This site is a wealth of information. These guys are professionals light years ahead in pond management. I didn't know other folks had the same passion.

"I have not failed, I have only found 10,000 ways that won't work"
Thomas Edison