AP,
This spring I put in the usual rainbows and four 8-10" brookies, for a trial. I lost all the brookies and one rainbow last week, because the pond is way down and the water temps are raising. The waterfall pump aerates the water enough, but I can't keep the heat down, my shallow well dosen't keep up with the warming water.

Can the Tigers take higher temps than brookies? They are a great looking fish.