Revisiting this question. The first two levers on the left are my two skimmer baskets, in the open position. The lever on the right, I assume is my bottom drain? Should it be in that closed position or in the open position? My pool was re-plastered this past summer and wondering if the plaster guys closed it and forgot to re-open. I know very little about the plumbing of a pool system, and not sure what the function of the bottom drain is. Does it serve the same function as the skimmers, or would it drain the pool in the open position?
https://www.troublefreepool.com/attachments/unnamed-jpg.172249/
My filter gauge was showing 18psi with the two skimmer valves open and the third one closed. When I opened the third it remained there. With all three closed (for less than 5 seconds), pressure dropped to zero, as expected. With the third one open and the other two closed, it showed 15psi. With all three open, it went back up to 18psi. So am I safe to assume that valve is for the main drain and its ok to open it?
Add 5 ppm worth of liquid chlorine. Circulate pool for 30 minutes. Test FC. Sounds to me the liquid chlorine is weak.
Chlorine from the first batch that was under performing, as previously noted, was from August 20, 2020. The next batch, which showed more potency, was from Dec. 1, 2020. By my guestimation it retained about 80% to 90% potency. Today, the lot was from Jan. 20, 2021 so things are looking up as far as the supply chain goes. They told me they move a lot of chlorine palettes since they have buyers who service universities and major hotels in the area and he said he was surprised they had some that old. They know me now and my standards for freshest available, so I can verify right off the palette before I put it in my truck.
Regarding the SLAM for mustard algae, I see some brownish residue on the cable for my robot and would like to scrub it down. What would be the best thing to do that with: straight LC, or something else like Jomax/chlorine mix, or an algeacide?
One last note: we had another epic rain event last evening, about 4 inches of rainfall, and the pool overflowed onto the deck. I backwashed to bring it down then water from the deck was flowing into the pool. Ugh! Fortunately I was already at SLAM level, pump was running continuously through the night, and after spending the morning maintianing the SLAM level, scrubbing the debris off the tiles, netting all the debris, hosing down the deck away from the pool, swimming laps to mix up the chlorine
its looking great. So glad I had the day off to baby it, but pool water looks clear and great. I appreciate all the help and guidance here.
