Question about cloudy water when Heater is on

[Tcap]

Hi,

We have a 20x40 IG liner with a Hayward heater. Everything was installed last Sept. (2005) and closed a few weeks later. We opened the pool about a month ago and cleaned everything up and balance the water. I have Ben's test kit. Everything was great and then we turned on the heater. When the heater is on, the water comes out of the returns cloudy. It seems to disapate and the rest of the pool is not turning cloudy. It will stop coming out cloudy for a little while and then all of a sudden it's cloudy again. This only happens when the heater is on. At first I thought maybe something was settled in the line so we let it run for a while. It turned to clear and then about 30 minutes later went back to cloudy. Here's the info on the pool ...
20x40 inground liner approx. 33,000 gallons. Aqua logic system with salt water generator. Hayward DE filter. Hayward H400 heater - propane.

FC: 4
CC:0
TC:4
PH:7.5
Alk:90
Cal: 160
Salt: 3200
Water temp. before heater turned on: 68 to 70.
Set heater to 78

Any thoughts on why I'm getting this cloudy water when the heater runs?

Thanks!
Tracy

[Poolsean]

Probably due to the salt system. Turn the swc to off and observe.

[Tcap]

Hi Sean,

Thanks. I turned off the SWG and the water comes out clear. I turn it back on and it seems to come out cloudy when it's generating chlorine. Any thoughts on why this happens?

At least I know my heater is not broken.

Thanks!
Tracy

[hzz]

I have a similar thing with my pool. When the heater is on the water coming out of the returns looks "different"....not quite cloudy but almost cloudy.

I always assumed it was beacuse that water is much warmer than the pool water...maybe a different density or something?

In any case, the pool remains crystal clear, so I wouldn't worry about it.

[MarkC]

I believe what you are seeing is the warmer water is not as able to absorb the gas that is produced in the salt water cell. I don't have a salt water chlorinator but I have been reading about people noticing bubbles in there return lines. Cold water can absorb more bubbles than warm water. Think about how many bubbles escape when you open a warm bottle of soda as opposed to a cold bottle. I don't think it a problem and would not worry about it.

[Tcap]

Thanks for all your help!!! I feel better about it now!

Tracy