What about Hayward Aquarite aqr-plus-SVxxST 33g/u or 50g/u. Is it sufficient for my pool?

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wverboom

wverboom

Active member
Aug 1, 2024
33
Spain
Pool Size
85000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Hayward Aqua Rite (T-15)
Hi guys,

I'm in the process of changing my pool to SWG but I'm not sure if the 33g/u or 50g/u is sufficient for my pool?
Only see the gram/u on the site and not the recommendation of pool size.
Pool is around 85m3 / 23K gallons.
I like an price economic solution and think this midrange Hayward will be ok for me to do the job.
Will also add the Ph automation, Redox and WiFi from Hayward. Or are there better / better priced options?

Regards, Wouter
 
Last edited:
33g/u = 1.74lb/day ~= a 30K cell.
50g/u = 2.6lb/day ~= 45K cell.

Get the 50.

Redox is not available in the US...can't help on the pH side, except to say I see lots of problems with acid systems...and you will have to run your CYA < 30 for the ORP to be accurate/within tolerance...which may be an issue in Spain. You will also need to calibrate on an ongoing basis...
 
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wverboom said:
I'm not sure if the 33g/u or 50g/u is sufficient for my pool?
Click to expand...
33 grams per hour is 1.75 lbs per day.

50 grams per hour is 2.65 lb per day.
wverboom said:
Pool is around 85m3 / 23K gallons.
Click to expand...
85 cubic meters is 22,455 gallons.

33 grams per hour will provide 9.3 ppm per day at 24 hour runtime.

50 grams per hour will provide 14.5 ppm per day at 24 hour runtime.

Typical maximum FC use is 4 ppm per day, so the 33 grams per hour model will work for pump runtimes over 10.3 hours per day.

The 50 grams per hour model will work for pump runtimes over 7 hours per day.
 
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These models are a lot bigger than Aquarite.

The largest plates are about 15.7" long (400 mm) compared to Aquarite at 5.9" (150 mm long).

The cell dimensions are listed as 355 x 305 x 305 mm, so how will a 400 mm plate fit in the cell?

1730044667672.png


Aquarite Cell Plates for comparison.​

Here are the dimensions of the Hayward plates:

T-15 has 13 Titanium Plates, 150 x 63mm. Produces 1.47 lbs/day.

T-9 has 13 Titanium Plates, 101 x 63mm. Produces 0.98 lbs/day.

T-5 has 7 Titanium plate, 150 x 63mm. Produces 0.735 lbs/day.

T-3 has 7 Titanium Plates, 101 x 63mm. Produces 0.53 lbs/day.

Hayward plates come from DeNora which is an Italian company.
 
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PoolStored said:
33g/u = 1.74lb/day ~= a 30K cell.
50g/u = 2.6lb/day ~= 45K cell.

Get the 50.

Redox is not available in the US...can't help on the pH side, except to say I see lots of problems with acid systems...and you will have to run your CYA < 30 for the ORP to be accurate/within tolerance...which may be an issue in Spain. You will also need to calibrate on an ongoing basis...
Click to expand...
What is your thoughts about pH automation and all the problems? What are those problems?
Do it by hand first and see how it goes? I can always buy it afterwards.
 
wverboom said:
What is your thoughts about pH automation and all the problems? What are those problems?
Click to expand...
They can work, and many are happy. Side effects of using is that salts form and need to be cleaned and injectors cleaned replaced periodically. Another downside that is regular testing is still required to make sure the pH probe and dosing is doing what it's supposed to be doing and replacement sensors may be expensive.

wverboom said:
Do it by hand first and see how it goes? I can always buy it afterwards.
Click to expand...
I would learn your pool first...you may not need/want it.
 
PoolStored said:
33g/u = 1.74lb/day ~= a 30K cell.
50g/u = 2.6lb/day ~= 45K cell.

Get the 50.

Redox is not available in the US...can't help on the pH side, except to say I see lots of problems with acid systems...and you will have to run your CYA < 30 for the ORP to be accurate/within tolerance...which may be an issue in Spain. You will also need to calibrate on an ongoing basis...
Click to expand...
Can you explain why the CYA level should be < 30ppm?
 

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PoolStored said:
33g/u = 1.74lb/day ~= a 30K cell.
50g/u = 2.6lb/day ~= 45K cell.

Get the 50.

Redox is not available in the US...can't help on the pH side, except to say I see lots of problems with acid systems...and you will have to run your CYA < 30 for the ORP to be accurate/within tolerance...which may be an issue in Spain. You will also need to calibrate on an ongoing basis...
Click to expand...
Concerning "Get the 50".
Should the 33g/u not be enough as the 50 is € 700,- more expensive and using 160Watt (close to 4Kw/day) more power and the replacement cell will be much more expensive to. It states 33 is sufficient for a pool <=150M3 so it would be almost double my pool size. I believe that more g/u will be better but it will cost me a lot more also.
 
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