Background: I haven't been able to physically service my pool in three months, but I'm back on it now. From the readings, obviously, there's a lot of work to do. This post is for one particular oddity that I don't really have an answer for.
I'm coming across white scaly flakes at the bottom of the pool. It started out with just a little patch, but those patches are getting bigger. They appear to be coming out of the outlets and then resting at the bottom. They aren't pouring out or anything like that. I can't visually see them, but from the pattern they're leaving on the bottom surface and the placement of them, it's not had to identify they're coming from the outlets. It definitely isn't salt (at least, it doesn't taste like salt). I'm not sure what it is, but it isn't dissolving on its own. In the four years I've been maintaining the pool, this is the first time I've seen this. I'll get some pics out in a little bit.
Any thoughts as to what this is? What caused it? How to address it? How to stop it from happening in the future?
I'm coming across white scaly flakes at the bottom of the pool. It started out with just a little patch, but those patches are getting bigger. They appear to be coming out of the outlets and then resting at the bottom. They aren't pouring out or anything like that. I can't visually see them, but from the pattern they're leaving on the bottom surface and the placement of them, it's not had to identify they're coming from the outlets. It definitely isn't salt (at least, it doesn't taste like salt). I'm not sure what it is, but it isn't dissolving on its own. In the four years I've been maintaining the pool, this is the first time I've seen this. I'll get some pics out in a little bit.
Any thoughts as to what this is? What caused it? How to address it? How to stop it from happening in the future?
| Test | 2020-07-12 |
| Free Chlorine | 4.2 ppm |
| Combined Chlorine | 0.0 ppm |
| pH | 7.2 |
| Total Alkalinity | 220 ppm |
| Calcium Hardness | 470 ppm |
| Cyanuric Acid | 55 ppm |
| Sodium Chloride (Salt) | 3400 ppm |
| SWG Instant Salt | 2200 ppm |
| Temperature | 84 ˚F |
