I've recently taken over management of my new pool and after a drain and refill, am focusing on getting the water chemistry in shape (you'll note in my results below the CYA and salt levels are low for this pool, which has a SWG. Note that the SWG is not turned on yet - I've been adding liquid chlorine while I raise slowly those levels.)
Last week, I noticed a white substance which in the corner of our spa. as soon as I disturb the water, much of it very easily breaks up.
From another thread, I thought maybe maybe this was calcium, but adding a drop of vinegar didn't cause any fizzing (see video).
Anyone have any idea what this is? This is in the corner which does not get a ton of circulation. The pool is covered by a tight-fighting opaque automatic pool cover 23+ hours a day - I thought maybe we were just creating a very stagnant corner of the pool but, but I haven't seen really anything that looks like this before.
I've attached a few photos, as well as linked video of me scraping this stuff, as well as the vinegar test.
Scraping:
Vingar test:
Any help you can provide would be greatly appreciated!
==========================================
------------------------------------------
Build Type: Plaster
Volume: 5900 gallons
------------------------------------------
Latest Test Result Summary:
FC: 5.2 (36 minutes ago)
CC: 0.0 (36 minutes ago)
pH: 7.8 (36 minutes ago)
TA: 110 (36 minutes ago)
CH: 230 (36 minutes ago)
CYA: 30 (36 minutes ago)
SALT: 1800 (2 days ago)
==========================================
Last week, I noticed a white substance which in the corner of our spa. as soon as I disturb the water, much of it very easily breaks up.
From another thread, I thought maybe maybe this was calcium, but adding a drop of vinegar didn't cause any fizzing (see video).
Anyone have any idea what this is? This is in the corner which does not get a ton of circulation. The pool is covered by a tight-fighting opaque automatic pool cover 23+ hours a day - I thought maybe we were just creating a very stagnant corner of the pool but, but I haven't seen really anything that looks like this before.
I've attached a few photos, as well as linked video of me scraping this stuff, as well as the vinegar test.
Scraping:
Vingar test:
Any help you can provide would be greatly appreciated!
==========================================
------------------------------------------
Build Type: Plaster
Volume: 5900 gallons
------------------------------------------
Latest Test Result Summary:
FC: 5.2 (36 minutes ago)
CC: 0.0 (36 minutes ago)
pH: 7.8 (36 minutes ago)
TA: 110 (36 minutes ago)
CH: 230 (36 minutes ago)
CYA: 30 (36 minutes ago)
SALT: 1800 (2 days ago)
==========================================
