Sizing SWG for 60k gal

dizydizy

Member
May 13, 2015
18
New Jersey
I have 60k gal pool. I'm in north NJ, so not a long hot season. I'm thinking of converting to SWG and weighing my options for equipment. Being at 60k and seeing advice to oversize puts me at having to buy 2x40 units. I started paying attention to the lbs/day here, and now wondering if perhaps rj-60plus would be enough since it's rated 3.10. Pentair IC-60 for example is only 2.0. So if I were to go Pentair and get two IC-40 at 1.4 each, that would only give me 2.8, which is still lower than the single rj-60.

Alternatively I can maybe get two edge-40, which would give me total 3.4lb, or two rj-45 which would total 4lb.

I typically run my pool filter for 8hrs, and based on SWGCalculator it says 3.1lbs at 100% for ~8hrs would give me 2ppm FC. Not sure how true to life that is, or how much FC i typically use. My pool doesn't get used all that much, isn't in the sun all day, and pretty deep so stays mostly cool.

Thoughts? Do i need to get 2 units or would rj-60 be fine for my case?
 
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dizydizy

Member
May 13, 2015
18
New Jersey
I have a single speed pump, so I'd like to run it least as possible, ~8hrs. Also not sure why you say either Rj-60 or IC-60 when their ratings are so far apart. 3.1 vs 2 lbs/day. Is the rating not an accurate comparison between brands?
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
18,959
Northern NJ
If you get a SWG you are going to need to run your pump at whatever it needs. I am skeptical of some of the specifications without independent verification of manufacturers claims. You have to be willing to give it a try and see what SWG % and pump runtime work for your pool environment.
 

wilkj1

Gold Supporter
Bronze Supporter
Nov 27, 2017
166
okc/okla
i have the rj60 plus in Okc running at 60 % 24/7 it does keep up with my 29k pool. i think you would need a double to run 8 hrs and at / www.discountsaltpool.com they have a 10 $ upgrade so rj45 you upgrade to rj60 for 10 bucks . you also have the option of supplementing w/ Liquid chlorine in heavy use / hot weather to boost daily needs if you go with one cell.
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
31,077
Laughlin, NV
It would make more economic sense to replace the pump (or at least motor) with a Variable Speed than to purchase two SWCG's.
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
31,077
Laughlin, NV
Your next motor replacement will be a VS anyway. Fed regulation kicks in next year making single speed motors for pool pumps no longer available.
 

dizydizy

Member
May 13, 2015
18
New Jersey
Interesting regarding fed regulation. I wonder if that will affect pump prices.

l1ltaral1l, no I didn't build the pool. It's nothing special, just a rectangle with the deep end being like 11' and shallow end 5' iirc. Kind of dumb in my opinion because it's not kid friendly at all. Too much water makes heating hard/expensive, and obviously hitting high end for specs on equipment also costs$. Certainly not something I'd build today.
 

dizydizy

Member
May 13, 2015
18
New Jersey
Back to my original question; I just realized I can try going rj60 and if it struggles I can get a second rj30. I'll loose maybe 150$ vs going two rj-45 right away but at least I'll have a chance to see how it does on its own. There shouldn't be any issue with running 2 different rated cells in parallel right?
 

l1ltaral1l

Bronze Supporter
Jul 16, 2019
572
Walnutport, PA
Interesting regarding fed regulation. I wonder if that will affect pump prices.

l1ltaral1l, no I didn't build the pool. It's nothing special, just a rectangle with the deep end being like 11' and shallow end 5' iirc. Kind of dumb in my opinion because it's not kid friendly at all. Too much water makes heating hard/expensive, and obviously hitting high end for specs on equipment also costs$. Certainly not something I'd build today.
Was it built as a residential pool? Or commercial? I agree - that's a LOT of pool!
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
31,077
Laughlin, NV
The pump will have a timer/scheduler. But you cannot use it to control the SWCG. So you will need to use the timer for the SWCG making sure it is powered only during the time span you have the pump running.