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    Remove old plaster or sand blast?

    We're getting bids now to do some renovation on our pool, built in 1978. Original deck is exposed aggregate, the stones are falling out, and the deck has many cracks. Fairly straightforward, going with a smooth finish. We've had it replastered twice, last time in 2007. The plaster has one...
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    Yellow/mustard algae, forever?

    I've had intermittent yellow streaks/smudges along the North facing wall of our pool for years. I tried to convince myself that it was discoloration of the plaster, and would scrub with brushes, stainless steel brushes and a pumice stone. I would keep the FC around 4 minimum, 6 after adding...
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    Falling CYA level

    I've been adding gallons of 10% bleach this summer, per PoolMath calculator, to prevent a recurrence of yellow/mustard algae this spring. I finally decided to test the CYA (using all fresh TFT reagents). I was shocked to find it somewhere between 1-15, confirmed by multiple water samples, and...
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    Dirt or algae?

    This winter was very wet in central Ca. I was brushing the pool almost daily, and not using any chlorine (bleach). No algae noted. But, afetr the rain stopped, and leaves stopped blowing in, I still have what I thought was dirt on the bottom, sides, steps. Started chlorinating in March...
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    Problem with R-0870?

    Been using this method 4-5 years. Fresh reagents from TFT this spring. When testing for FC, the color is initially deep pink. Adding R-0871 eventually turns it to pale purple; it has not gone clear in weeks. I'm guessing at the FC level, around 2.5 and adding bleach accordingly to get to...
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    Push CYA up, or keep adding bleach

    I've been using bleach for several years now. Pool water is clear, no evidence of green. Trying to keep FC 3.5-4; CC always 0-0.5. I find each day it drops from 4.0 down to 2.5 by evening. Based on pool calculator, I add 42 oz. of 10% bleach each night. Last spring I drained about half our...
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    Chlorine and chloramine

    Based on my readings at TFP, and the test kits, when there are measurable levels of combined chlorine, it means that there is likely some bad stuff in the pool that the FC level is not taking care of. Since using the TFP method for 3-4 years, life is pretty simple, my pool water is clear, no...
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    Drought impact in California

    We live in the central valley of California, where the 4 year drought presents many issues, practical and ethical, for pool owners. There are restrictions in place on new pool fills, and refills, and limits on lawn watering. I swim 4-5 times a week; no other users. Evaporative loss means...
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    Muriatic acid concentrations: Heads up, buyer beware, etc

    I've been using Kem-Tek muriatic acid for several years. This year they changed the design of the cartons holding two 1 gallon jugs of the stuff. Recently I noticed that after adding acid according to numbers from The Pool Calculator, my pH was still running high. While at a local Home Depot...
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    Solar diverter valve stuck?

    Intelliflo VS pump, SunTouch controller, Compool CVA24T solar diverter valve. Everything seemed OK. But with solar "off", and isolation valves closed, I noted some water dripping from drain on the pipe taking water up the wall to the solar. I closed the drain, opened the isolation valves...
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    Liquid chlorine shelf life

    I started using using liquid chlorine last summer, with great success. Because I have mobility problems, I am more interested in convenience in dosing than in price. So, I use Kem Tek 10% liquid chlorine, which I buy at whichever big box store has the freshest stuff; it costs about $3.50/gal...
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    Acid and bleach issue

    I've been using ABC since last summer with success; clear water, no algae or scum. I notice that my pH runs high (>8.0), and I need to add acid routinely. When I used pucks in the past, the pH was always ~7.5, but not now. Two weeks ago, I got the following: pH: >8 TA: 140 CYA: ~40-50 FC: 5...
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    Rat in the pool

    I'm not sure this is the correct forum, but here goes. This AM I found a dead rat on the bottom of the shallow end. It probably fell in trying to get a drink. I fished it out. No evidence of injury, and it looked in pretty good shape (ugh!). I skipped my workout today, for esthetic reasons...
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    Thanks. It works!

    Thanks to all who responded to my frantic posts over the last few weeks because of unmeasurable FC despite clear water, and CYA of 80-100. I was a skeptic, but after shocking for several days with gallons of bleach, I now have clear water, no slime, no algae. FC in the AM is 7-8, with OCLT of...
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    Pool calculator vs. chlorine/CYA chart

    I am, hopefully, near the end of a tiresome, expensive shock cycle due to high CYA, unmeasurable chlorine, etc., etc. I find the pool calculator to be very accurate regarding chlorine dosing/measured FC result. But, I notice a significant difference between the recommended FC target and shock...
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    Algae in the filter?

    I'm in the midst of a prolonged "shock" cycle. Don't want to go into details. But, trying to understand the source of algae that may be gobbling up my chlorine in a clear, non-slimy, non-eye-irritating pool. Does algae reside in the filter? We use a cartridge filter with relatively low flow...
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    Can't get measurable CL with tabs and floating chlorinator

    Pool 22,500 gal, plaster, solar heat, temp 86. CYA: 100. pH 7.5. Typical CL levels: FC: 1.0, CC: 0.5. Last replaced about 1/2 pool water 2 years ago. We have well water, which is hard. I used floater with 3"tabs for years, but gave up because the only way to find chlorine in the water was...