Rain diluting my CYA

[ka8yiu]

In SWFL, after a drought, the rain is here! Therefore, the process of needing to drain some water from my pool begins. (My lanai drainage adds a lot of the rain water into the pool requiring me to regularly pump some out.)

As a result, I find my CYA likes to lower from the natural water exchange. So, from what I have found here, one 8 oz trichlor puck adds about 1.3 ppm of CYA. Is this amount at all relative to a pool's volume? I have a relatively small pool (compared to many) at 8,000 gallons.

p.s. This is a convenient time as I may be out of town for a week, and I can supplement maintaining my FC level with the pucks, while conveniently raising my CYA level. This is the only time I use my feeder.

 

[YippeeSkippy]

For each 10ppm FC you get you'll also get 9ppm CYA.

Or having just entered your size pool into PoolMath it tells me 8ounces of trichlor will: up FC 6.1; up CYA 4.2; lower pH 0.37 and give you 5.6 of salt.

Just so ya know..

Maddie

 

[mknauss]

Sounds like a plan. As long as you know what you are adding to your pool. Be sure to use the Effects of Adding Chemicals in PoolMath.

Take care.

 

[svenpup]

You can use the "Effects of adding chemicals" section of Pool Math to calculate stuff like this. An 8oz puck of trichlor will raise CYA by 4.2 in an 8000 gallon pool. It will also lower pH so be aware of that.

 

[ka8yiu]

Tnx. I totally forgot about the bottom features in Pool Math. This will help me plan the trip.