When using a submersible pump to dump water to lower CYA, can you add water to the the top of the pool at the same time.
Reducing CYA
- Thread starter Reed Kadavy
- Start date
Absolutely, some have done so. You should match the rates as much as possible.
Alternatively you can drain a fraction and replace, repeat as needed. In AZ I'd avoid letting the plaster get exposed to the sun/heat.... so perhaps do it at night is best?
Maddie
Alternatively you can drain a fraction and replace, repeat as needed. In AZ I'd avoid letting the plaster get exposed to the sun/heat.... so perhaps do it at night is best?
Maddie
- May 3, 2014
- 58,311
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
You can exchange some water without draining.
If you place a low volume sub pump in the deep end and pull water from there while adding water in the shallow end you can do a fairly efficient exchange. That is assuming the water you are filling with is the same temperature or warmer than your pool water. If your fill water is much cooler than your pool water, then switch it. Add the water to the deep end (hose on bottom) and pull water from the top step.
The location of the pump and fill hose may change if you have salt water, high calcium, etc.
In my pool, with saltwater and high calcium when I drain, I put the pump in the deep end and hose in shallow end. The water in the pool weighs more per unit volume than the fill water from the hose.
Be sure to balance the water out and water in so the pool level stays the same.
If you place a low volume sub pump in the deep end and pull water from there while adding water in the shallow end you can do a fairly efficient exchange. That is assuming the water you are filling with is the same temperature or warmer than your pool water. If your fill water is much cooler than your pool water, then switch it. Add the water to the deep end (hose on bottom) and pull water from the top step.
The location of the pump and fill hose may change if you have salt water, high calcium, etc.
In my pool, with saltwater and high calcium when I drain, I put the pump in the deep end and hose in shallow end. The water in the pool weighs more per unit volume than the fill water from the hose.
Be sure to balance the water out and water in so the pool level stays the same.
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