My SWG showing age (4 years) and not working well, so I've been supplementing with liquid chlorine so FC has been yo-yoing between 1-4. I did an OCLT and was just over 1. SWG overnight test says generating less than 1. Thought I'd finally SLAM because filter which I just took apart and cleaned (pool had only been open one month and had been backwashed 4x), already it seems like psi is climbing. While the fresh filter has the water looking nearly perfect, I was suspicious when I'd add a gallon of chlorine at night (pool math would indicate to me that I should reach 4ppm and by morning it was down to 2.5 or so.
Today I tested everything (FC 2.4, CC 0.2, pH 8.0 added some acid to knock down pH to 7.4, Alk 80, CH 275, CYA 50 but I assume 60 for SLAM), and then added 6 gal of liquid chlorine to bring it up to 24, per the chart. It is cool and overcast, but a mere 2 hours later I tested to be sure I had reached 24 and it was already down to 16.5! I'm a bit confused and unprepared because I only had on hand 3 more gal of chlorine, thinking if there was a problem that it'd be quick to remedy. So, I added 2 more gal liquid chlorine to reach 24 (I hope), and I need to get more.... but what on earth could be consuming that much chlorine that quickly?
Also, I hope to run the filter a bit more before I have to backwash, but I'm on a new Super Pump XE VSP which is cool but doesn't tell me what rpm or even what "speed" it's at so it's hard to know where I'm measuring my baseline filter PSI from. Any tips? I feel like when I took the filter apart and then turned everthing back on, it was at 14 psi but I don't know where the motor was set -- if it was the prime setting or another speed. At 11am I heard the motor sound changed like it advanced to the next 4 hr period (a higher %/rpm setting) and the filter is 18psi. I did set a manual program earlier in the summer staying at the higher speeds for the majority of the time so as to keep minimum flow for the SWG...which leads to the next issue as it's a moving target because as the filter gets dirty, flow is degraded so what low speed may have met flow requirements at one point stop meeting it later.
Any tips?
Today I tested everything (FC 2.4, CC 0.2, pH 8.0 added some acid to knock down pH to 7.4, Alk 80, CH 275, CYA 50 but I assume 60 for SLAM), and then added 6 gal of liquid chlorine to bring it up to 24, per the chart. It is cool and overcast, but a mere 2 hours later I tested to be sure I had reached 24 and it was already down to 16.5! I'm a bit confused and unprepared because I only had on hand 3 more gal of chlorine, thinking if there was a problem that it'd be quick to remedy. So, I added 2 more gal liquid chlorine to reach 24 (I hope), and I need to get more.... but what on earth could be consuming that much chlorine that quickly?
Also, I hope to run the filter a bit more before I have to backwash, but I'm on a new Super Pump XE VSP which is cool but doesn't tell me what rpm or even what "speed" it's at so it's hard to know where I'm measuring my baseline filter PSI from. Any tips? I feel like when I took the filter apart and then turned everthing back on, it was at 14 psi but I don't know where the motor was set -- if it was the prime setting or another speed. At 11am I heard the motor sound changed like it advanced to the next 4 hr period (a higher %/rpm setting) and the filter is 18psi. I did set a manual program earlier in the summer staying at the higher speeds for the majority of the time so as to keep minimum flow for the SWG...which leads to the next issue as it's a moving target because as the filter gets dirty, flow is degraded so what low speed may have met flow requirements at one point stop meeting it later.
Any tips?
