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Showing results for tags 'nitrates'.
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A technician from the local pool supply chain determined calcification clogged the pump & caused it to shut down. The best solution was to partially drain the pool to hopefully lower TDS and Calcium Hardness. My strip test of fill water showed the TDS to be 0 and the Calcium Hardness to be 250. Here is a summary and the bad news as of yesterday. Here are the test results from the same local pool supply chain. Before the partial drain (no mention of testing for Nitrates)- FAC: 2 TAC: 2 CA hardness: 1,000 CYA: 120 TA: 200 pH: 7.6 Copper: 0 Iron: 0 TDS: 4,500 Pho: 1,500 12 days later. After the partial refill and filter clean (once again, no mention of testing for Nitrates)- FAC: 1 TAC: 1 CA hardness: 1,000 CYA: 120 TA: 160 pH: 7.6 Copper: 0 Iron: 0 TDS: 2,200 Pho: 1,500 Temp: 65 13 days later at a different location of the same chain. After adding 257 oz. of Muriatic Acid (14.5% HCL) 1 qt. 13 oz. at a time as recommended by the store to reduce TA and not seeing much of a reduction with my strip tests. (This time the salesperson told me she would test for Nitrates). She said the Nitrates were 120ppm and I must drain and refill again. She said fertilizer or fumigation would be the cause. I told her the neighbors fumigated their entire house recently and she said that ruined my pool. FAC: 3 TAC: 3 CA hardness: 1,000 CYA: 200 TA: 150 pH: 7.8 Acid Demand: 2 Copper: 0 Iron: 0 TDS: 2,600 Pho: 300 Am I forced to completely drain and refill? Thanks. volume is actually 28,000 gallon (estimated by pool supply store) in-ground concete -
All, New member and would appreciate any help. A few weeks ago, we thought we had metal stains and tried to get them out. using local pool store advise, we let chlorine drop to zero and used the metal free etc with associated backwashing etc. Since then we have not been able to get the chlorine levels back up. We have dumped in whole lot of Chlorine over this time, raised the PH which had dropped etc. The current readings are Free Available Chlorine -0, Total Available Chlorine - 0, pH - 7.4, Total Alkanity 120, cyanuric acid 100, calcium hardness - 140, phosphate - 0, nitrates 5 ppm. A week ago, TC was 2, FC was 0.5 and we had 6.8pH. We live in North East and are running out of ideas. Inground 32000 gallon pool. Pool is clear and looks swimmable. Brown stains still there.....