Heavy Rains

[clem1985]

I have experienced heavy rains in my area for the last week and a half, and supposed to continue till the end of the week. Should SLAM be performed because of that. Or just maintain. I'm also going to need to drain some water

 

[Texas Splash]

No need to SLAM just because of heavy rain. However if you had a lot of pool overflow or exchange, you might confirm the CYA to ensure you are maintaining the proper FC level per the FC/CYA Levels.

 

[clem1985]

No need to SLAM just because of heavy rain. However if you had a lot of pool overflow or exchange, you might confirm the CYA to ensure you are maintaining the proper FC level per the FC/CYA Levels.

Drained the water off below the skimmer, since I needed to replace a leaking gasket,but also from the excessive rain. So, once refilled to normal water level I'll recheck the cya from water replacement. It was 50 hopefully it didn't drop to much

 

[clem1985]

How long of a time window does a owner have once the fc drops below fc maintenance ppm before algae could cause a problem or even start to grow. For example cya of 50 has a target fc of 6-8ppm, over the course of the day the fc naturally drops down to 4ppm. It needs to be brought back up to 6-8ppm what's the time window?

 

[Texas Splash]

It needs to be brought back up to 6-8ppm what's the time window?

That could vary based on water temp, direct sunlight and I'm sure other chemistry variables. The sooner you increase it the better. If you notice a change in water clarity because of the drop, take the FC even a little high like 8-10 to help with the stress.

 

[clem1985]

So, I retested my CYA, I didn't think it would drop that much, but boy it did, since I did a partial drain and refill. I had to fill the r0013 solution all the way to the top have the black dot dissappear. There is not even a ppm mark for that. Is it 20ppm? I'm definitely going to have to raise the cya. FC tested at 9.5.

 

[Texas Splash]

I agree. You should add about 10-15 ppm worth of stabilizer (the sock method) to increase the CYA to at least 30. Even if you went slightly over to 40 it's not a bad thing. The FC needs that protection.