Does anyone know the affect of constant aeration on pool water chemistry? Specifically, does aeration affect free chlorine levels?
I have a new pool with an attached and raised spa. The spill way for the spa is 18" wide and the drop is about 2 ft or so. There's a three-way valve that controls the proportion of water that goes to the pool return jets and a return jet in the spa. I'd say about 2/3 of the water goes to the spa to run the spillway and about 1/3 goes to the three return jets in the pool. I also have a natural stone waterfall that I run a couple of times a day for a total run time of about 2 hours. The water fall is on a completely separate pump and piping system that is not at all connected to the main pool filtration/chlorination line (just a pump and some pipes pushing the pool water around). I can adjust the flow in the waterfall by adjusting a separate three-way valve that splits the water flow between the waterfall and a single return jet into the pool (designed that way for safety in case the waterfall line ever got plugged...keeps the pump from exploding ).
I typically run the spillway all the time (right now ~ 8 hours per day) and, as stated, the waterfall runs for about 2 hours (30min at pool startup, 1 hour at high noon and 30 mins prior to the end of the pool run).
Is constant aeration like this ok for water chemistry?
Some pool numbers -
Ambient temps (at time of post) - 100F +
Pool water temp - 80F to 86F
pH - 7.2 (it's a little low because I added acid and my FC levels are stuck until I get my CYA under control. I'm erring on the side of low pH to keep the HOCl levels higher than hypochlorite levels)
FC - 2
CC - 1
CYA - 100 (I know, it's way too high, I'm in the process of dumping water to lower it)
TA - ~80 (it's been rock solid all season between 70 and 90)
CH - 350 (I live in AZ, what can I say...tap water is typically 250+)
Salt - 3200ppm (salts a little low due to backwashing to lower CYA but SWG is not screaming at me yet)
Would love any pro-tips regarding aeration.....and wish me luck on getting my CYA and Cl levels back under control
PS - Anyone ever see the irony in using the acronym CYA (cover your a-- )for cynuric acid...kind of funny.....