OCLT With Rain Am I done?

Mavven

Well-known member
Jul 21, 2021
48
NY
Pool Size
18000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-45 Plus
Hey all, I'm new to all this pool stuff. I know I don't have any of my specs of my equipment up. I'll make this real simple, as I don't have a complicated system. I have a 27ft round 54" inch deep Saltwater 8000 pool. 190sqft cartridge filter with a 2 speed 2HP pump. Pool is about 18,000 gallons.

Bought the pool last year from the pool factory, being new and naive I bought the pool frog system. Educated myself in the off season and decided to go SWG. Picked up the circupool RJ45+ last month. Removed the winter cover about a month ago, to my surprise the water was crystal clear as the day I closed the pool. I'm not very handy with plumbing and PVC, so I asked a buddy of mine to help me plumb in the new SWG. Unfortunately he couldn't help for a few weeks, so the pool was dormant (I take my filter and pump in during the winter) and developed green algae.

Fast forward to this past Saturday, this is when I started the SLAM process. Checked PH before getting started. It was above 8.0. Lowered it down to 7.4 checked my CYA it was below 30 so I raised it to 40. Used liquid chlorine at 12.5% followed the pool math calculator and have kept a FC level of anywhere from 12ppm to 14ppm the entire SLAM process. As of yesterday I had vacuumed the pool everyday as wel, as scrubbed the walls everyday. Pool looks great, crystal clear. So last night I decided to do the OCLT. My reading at 9:30pm was 13ppm. Did not know ow we were going g to get a storm last night that dropped 1"inch of rain in the pool. This morning my skimmer was overflowing, so I know we received a decent amount t of rain. No sun, cloudy, took the morning sample. I got a reading of 12ppm and CC of 0.5ppm. All looks great, my main concern is the accuracy, as it rained last night? Should I continue SLAM one more day and retest tomorrow? I'm thinking the fact it rained and only had a 1ppm loss is a good thing right?

Advice would be greatly appreciated, thank you!
 

Rancho Cost-a-Lotta

Silver Supporter
TFP Guide
Apr 10, 2018
3,958
Rancho Cucamonga, CA
Pool Size
18375
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-45
You've come a long way in two forum posts!

If anything, adding fresh water to the pool will result in a lower FC reading due to dilution. That aside, if it was my pool, I would continue one more day for a bit of insurance. Two passed OCLTs in a row would provide added confidence in my results.

Make sure you run the pump to circulate water before performing each of the tests.

Good work!
 

Mavven

Well-known member
Jul 21, 2021
48
NY
Pool Size
18000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-45 Plus
You've come a long way in two forum posts!

If anything, adding fresh water to the pool will result in a lower FC reading due to dilution. That aside, if it was my pool, I would continue one more day for a bit of insurance. Two passed OCLTs in a row would provide added confidence in my results.

Make sure you run the pump to circulate water before performing each of the tests.

Good work!
Thanks for the fast reply! I have been running the pump on High speed 24/7 since I started the SLAM on Saturday. Keep in mind, pool was green and that's all. I don't get a ton of leaves or debris in the pool. Only thing I get, are small leaves from my neighbors weeping willow tree. I'm afraid to look at my electric bill but so be it.

I was thinking the same thing, SLAM one more day. Test and be done with it. I have 400 pounds of salt ready to go in and fire up the SWG once the salinity is at 3500-3800ppm.
 
  • Like
Reactions: IceShadow

Mavven

Well-known member
Jul 21, 2021
48
NY
Pool Size
18000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-45 Plus
SWG...perfect...

Next upgrade, VS pump.

If you're gonna stick around a while, take a few minutes to fill out your signature:


Best wishes!
What is the benefit of VS pump? I've always thought they will not work as efficiently as a 2 speed or single speed pump. I know the single and 2 speeds will no longer be available for purchase at some point.

Wife and I take care of a disabled child. I'll try and get to my signature. Unfortunately life gets in the way.
 

Rancho Cost-a-Lotta

Silver Supporter
TFP Guide
Apr 10, 2018
3,958
Rancho Cucamonga, CA
Pool Size
18375
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-45
What is the benefit of VS pump? I've always thought they will not work as efficiently as a 2 speed or single speed pump.
Actually, VS pumps are capable of running at lower speeds which results in significantly less operating costs. A single speed pump runs at 3,450 rpm all the time. When run at lower speed, VS pumps are much more quiet than a single speed.

Here's a chart for a 3.0 HP VS pump. Note the non-linear increase of power use (watts) as RPMs increase. By comparison, a 1 hp single speed pump runs at ~1,000 watts.

1649961299721.png
 
Thread Status
Hello , This is an inactive thread. Any new postings here are unlikely to be seen or responded to by other members. You will get much more visibility by Starting A New Thread