New Pool Build Next Door - Green Water

[Theo]

Hi All,

Our next-door neighbours have a new pool going in. During the construction process the heavy machinery has kicked up A LOT of dust and dirt and much of it ended up in our pool.

Construction started last Tuesday, our pool went green Saturday AM and after 48 hours of SLAM-ing it hasn't improved much, and were getting heavy staining on the fiberglass stairs and ladder steps.

Current #'s via Taylor K-2006

FC 10.5
CC .05
PH 7.6
TA 80
CH 140
CYA 30

I've been trying to hold FC @ 12 PPM but it keeps dropping. Since Friday (posting this Monday AM) I've added a total of 10L of 12% liquid chlorine to get to, and maintain shock level of 12PPM.

Should I stay the course with SLAM-ing? With the CC @ .05 and chlorine losses I'm assuming the answer is yes, but 10L of chlorine in 48 hours seem like a heck of a lot.

 

[JVTrain]

That's a lot amount of chlorine for your size pool for two days (32 FC @ 12.5% bleach, 22 @ 8.25% bleach). Going to have the stay the course however.

When you say staining on the steps and ladder, is that just where the dust is collecting or is it actual staining that won't go away with brushing?

It's a shame their not doing more for dust control during the process. Excessive dust is usually discouraged with construction and many contractors will keep soil damp during excavation and use proper techniques during installation to minimize. Is it ground dust, concrete dust or otherwise... or all of the above?

 

[Azgirl71]

I think you answered your own question. Stay the course and complete the entire SLAM process. You can bump the target level to 15ppm I'd you cannot test every couple of hours so it does not fall below SLAM level. Just test and add as often as you can.

 

[Theo]

Thanks Azgirl71.

Usually 10L lasts me a few weeks. Barreling through it in 2 days had me somewhat concerned.

I'll keep on testing/pouring/testing/pouring!

 

[Azgirl71]

Yes, when something gets a hold of the pool, it takes time to get your pool back.

 

[Patrick_B]

Yes, keep slamming. So yea...thats a fair amount of Bleach, but not enormous in volume, especially in a green pool. Follow SLAM, and don't let the FC dip low any more than you can help.

 

[jmhjgh]

Having you been running the filter 24/7?

 

[Theo]

Thanks all for reaffirming that I'm on the right path. Yes, the pump has been running 24/7 for sure.

I can usually turn a funky pool around in 24 hours. The amount of time and volume of chlorine was unprecedented, thus my concern. We're also experiencing the peak pool weather of a very short pool season up here in Toronto, that makes a green pool especially unwelcome.

I just picked up another 10L of chlorine... back to the measuring cup!