I have a ozone/ ultraviolet filter hayward system and an automatic pool cover

[eileendavis]

I have an ozone uv hayward pump , fiberglass pool with an automatic pool cover
I keep the pool closed when not in use, and use it when the sun is behind the trees (late afternoon) it is otherwise closed and not subject to direct sun to remove cya. cya is around 150, it was over 250
I have switched to cal chlor unstabilized chlorine, considering my pool is more like an indoor pool with regard to sun exposure. I have partially drained the pool water multiple times, and currently have a cyanuric removal pad that has a binding reagent to cya pulling cya as water goes through skimmer.
the filter is running at 2000 rpm 24 hrs a day
Best advice?, my chlorine levels remain under 1 even though Im shocking with multiple cal chlor weekly and after I partially emptied and refilled the pool several times and am adding potassium monopersulfate around every 10 days. I also put 10 oz of borax in , my pool holds 10,180 gallons , the temp is 85-88 currently
the water is crystal clear, the ph is 7 , it is cleaned via a pool "roomba". I quickly remove all debri
What should my target for free chlorine be?, Im told with uv/ozone, 0.5 is adequate for uv system via builder- Id love to land around 2-3
CAN YOU please add UV/Ozone systems to your choices on pool math so I can add recommended accurate levels of chemicals for my system. I cant be the only one with an ozone/uv pool? Help!

 

[PoolGate]

With CYA that high, you need another at least 50% drain and refill.

No to adding Ozone and UV as they are recommended not to use on this site.

Non-Recommended Pool Chemicals

These pool chemicals should not be added to your pool. Save your money and frustration and avoid these chemicals!

www.troublefreepool.com

Pool Care Basics

 

[Donldson]

Welcome to TFP!

and currently have a cyanuric removal pad that has a binding reagent to cya pulling cya.

Just so you know, those things are scams. In a pool your size 10 ppm of CYA weighs about 1 pound and has a volume of about a cup. So unless it's getting considerably larger and heavier every day, it's not pulling anything out.

As far the the UV/Ozone system goes, it does not change any recommendations at TFP. It provides minimal sanitation or oxidation (if it's even working correctly, which is difficult for a homeowner to measure) nor do the effects leave the reaction chamber. Keeping 0.5 FC with 100+ CYA is incredibly unsanitary, virtually all the chlorine is locked up. We always follow the prescribed FC/CYA Levels to keep water sanitary and algae-free. The levels given by PoolMath are what everyone should be maintaining for a sanitary and trouble-free pool.

 

[proavia]

Welcome to TFP!

How are you testing your pool water?
Post a full set of test results from one of the recommended test kits. Test Kits Compared

FC
CC
pH
TA
CH
CYA (if CYA above 90, do the diluted CYA test)
Water temperature

With a suspected CYA of 150 and an FC of 1 ppm, you are well below the recommended chlorine levels and inviting algae. Your FC should be 7.5% of your CYA at a minimum.
Given that you are shocking the pool and adding MPS weekly but not seeing a rise in FC, my bet is you have a nascent algae bloom - even though the water appears clear to you.

Suggest you open the cover for at least 24 hours - with pump running - and perform an Overnight Chlorine Loss Test.