Since I can't measure the CYA I have to estimate it. I'm trying to understand this study:
but I hope that someone can explain it in Sesame Street language so I'll...

Hello, I've recently purchased a property and learning to maintain a pool for the first time.

I have a chlorine dispenser, and it appears to be drawing chlorine from...

Im having issues with this cal-hypo feeder. I have a hard time keeping my chlorine residual above 1ppm, i have vinyl pools from 16k gallons all the up to 30k plaster...

Hello, looking for help with continuous 0 chlorine reading over the past month. Started with a green algae bloom which resolved with triple shocking with liquid...

So, my CYA is high (80-90ppm) and I'm trying a new routine this year to help bring it down.
(in addition to annual end-of-season partial draining. The draining has been...

Hi everyone, I’m hoping I can get some advice as to whether or not I’m on the right track.

This year we have had relentless rain in western NY and I battled with a...

I have been operating my swimming pool at my campground, for the last 37 years.. However, I've noticed in the last 3 or 4 years, the chlorine (granular ca hypochlorite...

Hi everyone
I noticed a bunch of black spots on my vinyl liner so I took a water sample in. All numbers pretty good.
FC 3.14 TC 4.45 ph 7.4 ta 120 ch 135 cya 37 iron 0...

Hi all, I've got a 66,000 litre indoor pool.

I've been using 15% bleach (Sodium Hypochlorite) for a while, but now have found it's currently difficult to buy here in...

Purchased our home four years ago with 30,000 unheated inground pool with the original 20+ yr. old vinyl liner with an automatic cover which we use 3 months out of the...

Hi All. I did a quick scan of topics, and a search, and didn't find anything similar so..

I used a new pool service company this season due to unprofessional behavior...

I have a 16,000 gallon vinyl in ground pool.
Winter is over and the cover came off the pool 8 days ago. 4 gallons of liquid chlorine (12.5%) were added to the water as...

Hi

Have a wooden pool with liner which i have opened recently and have identified a white stain which i am assuming is a chlorine stain.
Pool was shut off as per...

Hi, hoping someone can give me an idea on what the problem(s) might be.
I inherited a pool, 11 x 5 metre mosaic tiled, sand filter etc.
It was extremely green, this was...

Hi.
Please tell me, who can I understand that the pool does not have chlorine, the, is perchlorinated?
What test, must to doing?

Hi All,

I'm in australia, we use PPM to measure chlorine, and my pool is currently sitting at 5ppm.. however I have 2x different orp testers that both give me very low...

I have an indoor 66,000 litre swimming pool which I sanitise with sodium hypochlorite. I used to have problems with CyA levels being far too high (>300ppm) but got it...

Hi All, Hoping someone can shed some light on this,

Firstly I have a chlorinator that i suspect it on it's last legs, However my problem is when i try to test the...