closing with polyquat?

[Jonsstihl]

I had two years straight of opening my pool to a green pea soup and was wondering what I"m doing wrong.

first year opened to a clear pool and I would say it was the year I was learning so may not have done everything right but I wasn't expecting my second and third years to be green.

I close when water temp is below 60 and open as soon as the ice melts I slam FC before closing and in the spring I have no FC and my water is clear but I have a little green algae in spots and there appears to be dust and dead algae on the bottom. I can see the bottom. as soon as i start the pump water turns to pea soup and I can't see the bottom anymore. I have slammed and the water is clear now. this has happened the last two years. But I would like to open to a clear pool next year.

we are up north so I can't really add FC during the winter. I have a leaf net I put on but I take it off when I close because of snow loads which would just tear a cover up. I drain approximately 18 inches below the skimmer and by spring water is up to the bottom of the skimmer and I just hook everything up and fill the last 4 or 5 inches and test and balance the water.

I was wondering if polyquat would help. I'm finding a bunch of old threads but not much new stuff.

 

[ajw22]

You should try PQ60 at your next winter closing...

Algaecide - Further Reading

www.troublefreepool.com

 

[Bperry]

If the water is clear until you turn the pump on, os there perhaps water in the equipment that needs to be cleaned/drained before winter?

 

[Jonsstihl]

I think I will try it. All the pool equipment gets drained (filter) / brought inside (Pump) for the winter due to freezing temps. the water is actually crystal clear when the ice melts but I can see sediment and a light green haze on the bottom. The first time it happened last year I just thought I would vacuum when I started the pool so I didn't even have any chlorine on hand when I started the pump. I think turning the pump on just stirred up all the sediment and algae. I did find the algaecide article on pool school and it was helpful in describing how to use it. Its ironic because the first closing I pretty much didn't really know what I was doing and that was the best opening. I got the pool in august 2021 so I barely got used to it before closing and that was the best opening,

this year the ice melted early april and I waited one week and the water temp was already up to 58 degrees so it climbs fast with the sun coming out more.