Please see below for the specifications of my work pool. It is all automated and have the pH set for 7.5 and ORP is currently set at 675mv (jumps up and down a little depending on bather load at the time) and that seems to keep the free chlorine levels right between 2.0 and 2.5 ppm give or take depending on bather load and the dilution of sodium hypochlorite to water that I have in the tank at any given time. We test with the taylor testing reagent kit (recommended on this site) 4x/day so the numbers should be accurate and the water is very clear and blue. The system has been working great in my opinion since I installed 3 months ago.
One thing I have been noticing is that TA has started to increase (we were trying to keep it right around 100ppm) and has crept up to 140-150 over past several weeks and would like to know #1 the best and safest way to bring it down without throwing off or affecting the controller readings or with the automation of the liquid chlorine and CO2 gas and #2 if having it up that high poses any problems with sanitizer levels, swimmers and/or what might be causing it? alll the other numbers are right in line and we use a very small amount of CYA (about 20ppm) just becuase of the UV lamp and to aid in bather comfort, but like to keep the sanitizer levels as close to 3.0 as possible as we have a large number of bathers/day/week.
Any advise on how to best addresss the TA rise issue would be most appreciated.
Darin
24,000 gallon indoor, commercial, gunite pool
hayward pro series 500lb HR sand filter
Hayward TS VS 1.85hp programmable pump
Hayward CAT-4000 automatic pH/ORP Controller
15 gallon liquid chlorine tank with stennar pump injection
50lb CO2 gas tank injection
Paramount 99gpm UV inline sanitizer light
Raypack 333k btu gas heater
One thing I have been noticing is that TA has started to increase (we were trying to keep it right around 100ppm) and has crept up to 140-150 over past several weeks and would like to know #1 the best and safest way to bring it down without throwing off or affecting the controller readings or with the automation of the liquid chlorine and CO2 gas and #2 if having it up that high poses any problems with sanitizer levels, swimmers and/or what might be causing it? alll the other numbers are right in line and we use a very small amount of CYA (about 20ppm) just becuase of the UV lamp and to aid in bather comfort, but like to keep the sanitizer levels as close to 3.0 as possible as we have a large number of bathers/day/week.
Any advise on how to best addresss the TA rise issue would be most appreciated.
Darin
24,000 gallon indoor, commercial, gunite pool
hayward pro series 500lb HR sand filter
Hayward TS VS 1.85hp programmable pump
Hayward CAT-4000 automatic pH/ORP Controller
15 gallon liquid chlorine tank with stennar pump injection
50lb CO2 gas tank injection
Paramount 99gpm UV inline sanitizer light
Raypack 333k btu gas heater