Reverse osmosis

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J

Jlankert

Member
May 23, 2020
10
Las Vegas
Pool Size
30000
Surface
Plaster
Chlorine
Liquid Chlorine
Has anyone used an RO service? Just wondering how good the results were?

My pool CYA is 50-60. And I can’t drain it, because I have a plumbing issue that would cost $3500 and require digging through my tile and foundation. Not ready to do that yet.

It’s going to hit 117 here this week, and my pool is in direct sunlight all day long. I’m in a constant battle with algae all summer long.
 
mknauss said:
Welcome to the forum!
How did you test your CYA of 60 ppm?
You can follow the SLAM Process at a CYA of 60 ppm.
I suggest you read ABC's of Pool Water Chemistry.
Click to expand...
I used one of the recommended test kits. And I’ve read SLAM procedure a few times, but I don’t think that’s going to resolve my CYA issue? Or am I mistaken?
 
Assuming you conclude you need to drain some water, you could buy or rent a pump to pump water to your street storm drains. Anyway 60ppm isn't the end of the world. Just means you need to keep your chlorine levels a little higher. If you use just liquid chlorine, the CYA level will drop over time on its own.
 
A 60 ppm CYA is fine in our climate. In fact, you will not want it any lower for the next three months.

Post up a full set of test results. Fill out your signature if you would, really helps us help you.
Save your test results to your Poolmath logs. We use that information to provide guidance.
 

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mknauss said:
Whom will do that? I live in Clark County. You can drain your pool to the sewer cleanout. And refill it when you wish.
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I can’t use my sewer cleanout because I have a plumbing issue. The pipe is dislocated and needs to be dug up. I had a plumber here for a week with a camera sucking out sand until he could see what was going on. I have a sand filter, that’s why all the sand.
 
mknauss said:
A 60 ppm CYA is fine in our climate. In fact, you will not want it any lower for the next three months.

Post up a full set of test results. Fill out your signature if you would, really helps us help you.
Save your test results to your Poolmath logs. We use that information to provide guidance.
Click to expand...
Ok, I thought that was high from what I read? I guess I’ll try to SLAM it then. My FC 6.0, PH was 7.8 this morning. TA was 110. I put acid in a few hours ago.
 
For a normally chlorinated pool, a 60 ppm CYA level is a the high range. But our climate is bit more extreme than most. And our elevated water temperatures in the summer will degrade your CYA by 10 ppm or so per month, so do test CYA once a month.

Your FC consumption should be around 4 ppm per day. If it is higher, then you likely have organics in your pool. Understand that you never go below minimum FC based on FC/CYA Levels
 
mknauss said:
For a normally chlorinated pool, a 60 ppm CYA level is a the high range. But our climate is bit more extreme than most. And our elevated water temperatures in the summer will degrade your CYA by 10 ppm or so per month, so do test CYA once a month.

Your FC consumption should be around 4 ppm per day. If it is higher, then you likely have organics in your pool. Understand that you never go below minimum FC based on FC/CYA Levels
Click to expand...
I would probably have to put a half to gallon a day to keep it at a 7-9 ppm. Does that sound right to you? I’m also using tabs by the way. Because the liquid chlorine burns off so fast.
 
The only issue with always having trichlor tablets in a pool is that the CYA is always changing. So knowing how to handle the FC based on the FC/CYA Levels is very difficult.

To be honest, the best way to chlorinate in our climate is a SaltWater Chlorine Generator. Makes pool care very easy.
 
mknauss said:
The only issue with always having trichlor tablets in a pool is that the CYA is always changing. So knowing how to handle the FC based on the FC/CYA Levels is very difficult.

To be honest, the best way to chlorinate in our climate is a SaltWater Chlorine Generator. Makes pool care very easy.
Click to expand...
And that’s why I was thinking about RO? I don’t think putting a gallon of liquid chlorine a night, is very practical? Maybe if I lower my CYA with RO, I can use strictly liquid chlorine at a smaller amount.
I’m sure if I had a 6000gal pool with swg it wouldn’t be an issue.
Any experience with RO? What’s a swag on converting over to swg price wise?
 
Lowering your CYA will most likely increase your FC usage per day at this time of year. If my pool drops to 60 ppm, it starts using 5+ppm FC per day. At 70 to 80 ppm CYA, I use about 4 ppm FC per day.

No experience with RO. I know you do have to have 0 algae, you will still need to add about 25% make up water, and it will cost in the $1000 range.

All pool equipment prices have gone way up. See Compare and Review Saltwater Chlorine Generator Prices and Features for SWCG's. You would need one rated for 60K. So the RJ60 from Circupool would be a good fit.
 

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