- Jul 3, 2013
- 9,028
- Pool Size
- 15000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool SJ-40
I think you went to low on FC and have some algae growing.. I see a SLAM in your future, lets see what the OCLT comes up with..
Okay so here are my results from this morning. I added a one pound bag of shock in the pool last night around 5:00pm and I tested this morning at 7:00am.Tend to agree with Jim - assuming your test kit is working correctly, running at 75% for 24 hours should have generated plenty of chlorine. If you're still dropping in chlorine level, something else (algae?) is consuming it. Per cowboycasey - use liquid chlorine to bring your levels up quickly, SWCGs are not very good at doing so.
I would at least bring your pool up to the 7 or 8 ppm level using liquid chlorine before attempting to do the OCLT. You're already too low in chlorine, you want to try and stay ahead of anything that might be brewing.
You did mention you had reagents for the FAS-DPD chlorine test coming - those will be a good check against your current testing kit.
Yeah I am happy that the chlorine went up from yesterday. I'm not sure if it was the shock, or the SWCG, or a combo of both that raised it that muchGlad to see your Chlorine away from that '0' point - nice job! Have a few questions/concerns as a follow-up:
1) Are you using Poolmath to help you decide what/how much to add? You state 'added a one pound bag of shock' - for your size pool, how much should that have raised your chlorine?
2) I'm suspicious of the test you're using if the CYA went from 73 one night to 99 the next morning. You don't mention adding stabilizer? What sort of 'shock' did you add?
3) You're running your salt level awfully low for any SWCG I've seen. Usually they like being around 3000 PPM. Are you sure your SWCG is actually generating chlorine??
Thanks!
-Pieter
That would really suck because I just spent a fortune having fresh water poured in to fill the pool.OK. That all makes sense. Hope you didn't overshoot on CYA - it's notoriously slow to dissolve and show up on tests. Even at 99 you're arguably too high already.
When are you expecting your reagents so you can double-check your test results? Reliable chlorine testing is what you're going to need! Sure sounds like you have something consuming your chlorine (algae...)