I'll be installing aeration in the coming weeks and am interested to see how that affects blume and temps. I've had as high as 99 degree surface water this summer.
I bit of a highjack to my own thread (I guess I can do that)...I can't say what adding the aeration to my pond has done to the blooms as my old cattle pond is so freshly renovated that blooms have been heavy, consistent, and, at times, scary even after the diffusers went in. The water clarity (18-24")has been very consistent since adding aeration with the color varying every few days. But I can tell you that before the aeration system was added I had temperatures at the bottom in the lower 70's and surface temps in the mid/lower 90s. My pond has a lot of shade which helps temps, but is bad for wind action. After adding air, the bottom has risen into the mid to upper 70's, but the surface stays in the mid to lower 80's.
It makes since that if you raise the bottom temps by circulating the water, the upper temps will fall...until you over circulate and super heat the whole pond. I just run the air from 9pm to 9am right now.
I'll check my records (I take temps at the surface, 18" down and at the bottom by the end of the dock,7 feet down about every other day) and may post some "before/after air" readings.
Besides sideswiping my thread, I'm still interested in hearing from those hyacinth and/or water lettuce lovers.
