Fighting some type of algae

[Wkutim]

Bought a house and I nground pool was not closed correctly last season, looked like a farm pond. After several weeks thought I had everything under control and balanced. Been in twice with family. Went out of town for a week and FC dropped to 0 (unknown how long) now I have a persistence sand/pollen like flim every morning on the floor of the vinyl inground pool. I have brushed and vacuumed to waste daily. Each morning looks like sand/pollen has settled over night. I also have a Dolphins dynamic and the bag has a yellow/green tint when I pull it out to wash each day.

here are my numbers.

22000gal
FC 23ppm
CC 0
pH 7.1/7.2
TA 150
CH 120
CYA 70-80

I'm afraid that I need to lower cya by draining and refilling prior to fighting the algae issue. Pool is cloudy after brushing and vacuuming, but clears up a bit overnoght. The noticeably brownish layer on the floor as stated above returns.

Thoughts and suggestions.

 

[jblizzle]

Welcome to TFP!!!

You need to follow the ShockLevelAndMAINTAIN Process ... either by raising and maintaining the FC higher, or lowering the CYA first.

Note pH test is not valid when FC > 10ppm

What test kit are you using?

Please add your pool details to your signature as described HERE as it will help us help you.

 

[Wkutim]

Taylor 2006 kit. Good to know about pH not valid. First pool and still learning. On my phone will fix signature once on my PC.

 

[poolnoob.ca]

This would be a good post to put in the "algae - prevention and treatment" section, no?

 

[jblizzle]

I never pay attention to the actual forum that a thread is located in but I can move this.