I just tested my CYA and it is currently 50. The pool calculator recommends draining 20% of pool water. How do I go about doing that? Can I just open plug and drain into yard?
Lowering CYA
- Thread starter Terrjam
- Start date
Your CYA of 50 is recommeded for most outdoor pools. Is there a reason you want to lower it?
No, I just wasn't sure if I needed to or not. The CYA test can be a little tricky for someone with terrible eyes. At first I thought my reading (the black dot started to disappear from top view) was 80, but as I continued to add drops I realized my first reading may not be right.
This is my least favorite test and hard for me to read.
This is my least favorite test and hard for me to read.
Further info on the CYA test (and the others), if you have not seen it:
extended-test-kit-directions-t25081.html#p206397
Note that the lighting is quite important for the CYA test.
extended-test-kit-directions-t25081.html#p206397
Note that the lighting is quite important for the CYA test.
If that's all you can find wrong with your water, leave it alone!
http://tftestkits.net sells a standard solution for the CYA test. It is a known 50ppm solution that you use in place of pool water in the CYA test to check yourself. Then you can experiment with the lighting, how far to hold it, etc etc until you know what to do to get an accurate reading.
http://tftestkits.net sells a standard solution for the CYA test. It is a known 50ppm solution that you use in place of pool water in the CYA test to check yourself. Then you can experiment with the lighting, how far to hold it, etc etc until you know what to do to get an accurate reading.
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