I went out to switch over from bottom aeration to fountain this morning so I took some readings. Aeration is running 9 hours (11p-8a). Surface temp was still 88f, 3' was 87f and 11' was 86f. I've backed off another 3 hours on the startup to give the surface more time to cool. PH was 7.5.

While switching over the systems, I noticed the air line was quite warm. The pump is housed and tho it doesnt have a fan, is very well ventilated. I'm wondering now how much pump heat contributes to the water temp. Not sure how much air gets to cool before it reaches the diffusers.


.10 surface acre pond, 10.5 foot deep. SW LA. The epitome of a mutt pond. BG, LMB, GSF, RES, BH, Warmouth, Longear Sunfish, Gambusia,Mud Minnows, Crappie, and now shiners!!...I subscribe!!