Now what? On July 30 th i checked temps , surface was 80 , 10 ft flat was 70 , 12 ft holes on each end were 61-63.. And 18 ft hole was 59.. So today i was garage saleing and paid 50 bucks for a Tomas air pump, 4.2 amp don't know hp.. I plugged it I'n left it run for 6 hours I'n 18 ft hole. Went out this evening checking temps with camera, surface was 72.. And the 18 ft hole was at 71... Yep a nice pump for 50 bucks i flipped her over. As checking temps i seen 2 trout on camera I'n 8 ft at 72'.. So now do i want to move stone I'n 8 ft area and only run at night or set temp for like 65' ? Leave it I'n 18 ft hole? Run 24/7 I'n shallow water.. It sucks i think if i had this figured out i wouldn't have lost trout a month ago.. This is a record heat here I'n Wi. Just trying to get this figured out for next year. Any of you northern guys without a ton of inflow able to keep your trout this summer? Looks Like the lows for the next week are I'n the low 60's... About time.....