Hey Earl, Just kinda jerry rigged a semi-home made aerogrow with 28 plant sites. I currently have it set up to a pretty good size res, but am replacing all the sprayers and poly tubing ( kind of dried and clogged ), was really curious on what to do with my res chiller, I understand 1 end waterfalls back into the res, but where does the other line hook up, thanks for your time, any help is much appreciated with aeroponics!!!