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RStringer (Jul 22nd 2020), DrLuke (Jul 22nd 2020)

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Re: 8 acre pond at 10,000' - lots of aeration ?s #523851 Jul 22nd a 05:37 PM
by wbuffetjr
wbuffetjr	Originally Posted by esshup Just make sure you run the aeration system long enough to keep more than 6 mg/l at the deepest part of the pond. Trout will survive in water temps above 70°F if the O2 readings are in the 9mg/l or higher. (that's at 780' elevation). With Bob Lusk recently discussing LMB actually seeking out favorable water temps over better DO I have tried to pay more attention to temp this year. I would GUESS trout are even more sensitive to temps. Last year I got surface temps up to 71. This year highest surface temp I read was 65 so doing MUCH better. I had 7.5PPM DO at 1' and 7.0PPM at 12'. I am currently running the 1/2HP Thomas 2660 for 1 hour at midnight, 1 hour at 3:00am and turns on again at 5:30am to 1:30PM. Currently air temperatures are in the 50's at 5:30am so I think the night time running is helping keep water temps lower. The big 1HP pump comes on at 7:30am to 1:30pm and runs simultaneously with the 1/2HP pump. I will increase duration of both pumps next month as air temps come down. Fish are HUGE and fight like crazy! Made 5 casts and caught 4 fish while standing in the same spot! The water continues to do new and different things. Last year the grass blade bloom (GBB) started in early to mid August. This year the GBB showed up in late June. I have never seen the water so clear in July. If it was not for the GBB I would guess visibility would be 7-8'. Had a similar GBB/visibility situation for the first time ever last September. This year it happened in July - another first. Will be interesting to see what happens after a year at the increased level of aeration I am running nowadays. Got one "plume pipe" installed in the plume of a dual diffuser. I had pipes at the cabin I wanted to use. those pipes turned out to be WAY too heavy duty. First pipe ended up laying horizontal on the bottom of the lake and is now considered structure. I am going to source some lighter pipe and install a second plume pipe in September. The purpose of the plume pipe is to stop the ice domes from forming over the aeration plumes during winter. 98% sure the ice domes are what have been preventing me from keeping a hole open in the ice through the last two winters. Also reoriented two other diffusers closer to natural structure protruding from the water as a test to see if the natural structures could also disrupt the domes. My remote camera will take one daily pic everyday and I will be able to monitor progress. Should be interesting. Cool pic from the trip. Not sure why we get so many rainbows and not gonna complain about it.