I checked the temps last night and very little noticeable temp change due to the rain. The bottom was one degree cooler while the surface and 18" down were two degrees warmer. I can't conclude anything from that. At any rate, I have started a separate thread to document and discuss the before/after temp associated with my aeration start-up this summer. It's located here...

http://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=494996#Post494996

I am still hoping to here from some hyacinth lovers...

Fish on!,
Noel