Originally Posted by duraleigh
Tom,
Once you remove the eyeball base with the key (see above), what you have in the wall is 1.5" pvc female threads. (Not on all pools but most IG's)
Simply screw in a 1.5" male thread connected to a 90 and bring the 1.5" pipe up about 6" under the surface. "T" that pipe and reduce down to 3/4" on both sides of the "T".
Then, with T's and a 90 on each end, put however many vertical 3/4" sprayers you want, along that 3/4" pipe. drill a hole in some end caps (I used 1/4") and glue them on the top of the verticals. You can make out the outline of it in one of the pics
Whole thing took me a couple of hours of thinking about it and probably an hour or so glueing it together. You can get as creative as you want with the number of sprayers, angles of the sprayer, hole sizes, etc. The idea is to get a lot of water high into the air and let the evaporative process work.
While in the pool, I caught the falling water in an insulated cup with the pool temp guage in the cup. Temp in the cup was 78 degrees on a 93 degree day. Not bad for 6 bucks.