sethz

The current CSI is -0.05. I think I will increase CH bit. Thank you. I learned a lot these days.

To report back, my Taylor K-2006 kit arrived today. FC 1 CC 0 pH 7.6 TA 90 CH 150 CYA not tested (added last weekend, expected 25~30) The water looks clear, I guess now it's back to normal maintenance status. Thank you all for the help. btw, I also tested my tap water (from private well): FC 0 CC 0 pH 6.9 TA 10 CH 30

Hi Guys. I did another test in pool shop this noon: FC 0.2 CC 0 pH 6.9 TA 70 CH 283 CYA 0 Now I have doubts on their test. Using the same sample, I did both OTO/DPD test before running to the pool shop. Both tests are around 3, definitely not zero (mentioned before, I have difficulty judging color shades, so roughly). Bucket test also suggest the water is responding with chlorine, so I assume ammonia is gone. Soon I will find out after K-2006 kit's arrival. CH increased again, 130 -> 225 -> 283 in 3 days, I didn't put any calcium yesterday, According to poolcalculator my CSI is -0.9, so the water eats plaster that fast? or maybe test error again. The plaster looks ok (well, I am only able to see the pool bottom for recent 2 days), with discoloration somewhere (blue color plaster surface), but I don't know it's from years of usage, or last year's negligence, or these couple days. After the tests, I poured two gallon %6 bleach, targetting FC to 10. Will use Borax or Baking soda later to address pH/TA, which one first?

Thank you for the encouragement, chem geek. I just ordered K-2006 online. I have problem comparing the OTO or DPD color shade chart, titration test will be the way for me. I will do another water test tomorrow, I will keep you guys posted. It's the fifth day since I opened the pool, lots of energy and dollars. But seeing the pool becoming the way I dreamed well worth the efforts.

The nice senior couple left everything they have. Hayward EC65 DE filter, Hayward super pump 1HP. Vacuum, robot, submersible pump, loop-loc cover. Household bleach. Used cal-hypo for the first shock, but be convinced and will use bleach since now. No, I don't. Actually I learned such thing as SWG exist yesterday night. Good idea, never thought about that. Will do it over weekend. The only thing between two test was 5lb cal-hypo 65% (plus some backwash/DE refill). So I guess that's source.? I will do a water test tomorrow then continue adding baking soda to achieve 100 TA. About maintaining 15 FC shock level, when will I know it's enough? like 1ppm drop overnight? I will keep in mind about the option of hydrogen peroxide for future. learned a lot these two days.

Thank you, quantum and chem geek. I will keep your advices in mind for the comming days adventure. A follow up, this morning the pool water LOOKs crystal clear. I bring the water sample to the pool shop again: FC 0 CC 0 pH 6.9 TA 50 CH 225 CYA 0 Phosphorus 200 So even I putted 5 lb cal-hypo 65% yesterday 4pm, now all chlorine is gone. This time I pour 368 Oz bleach, 4lb borax, 4lb baking soda at 4pm. (will do a bucket test after the post) I went to local Leslie's, they don't even stock the rebranded Taylor K-2006 kit that everybody recommended. Will order online. BTW, pool shop guy mentioned the 200 ppm Phosphorus is high, and that's why pool won't hold chloride (I doubt this). He recommended expensive phos-X, I recalled pool school's comment about phosphorus, I said I will pass.

Greetings, I am new pool owner. Long story short, the pool was neglected by previous owner last fall, they did hire people to close the pool, but my guess is they didn't vacuum it nor check chemistry. For some reason, I just opened the pool 3 days ago (yeah, not too much time left, hehe), the water is green and muddy, bottom is covered by leaves. The opening guys throw a bottle of algaecide and two bags of shocks. Then I keep the filter running, and vacuum/brush, and backwash/add DE, again and again. Today the pool looks much better, still little greenish though. I went to pool shop for water test, here it is: FC 0 CC 5.2 pH 7.2 TA 70 CH 130 CYA 0 I have read through the pool school last 2 days. If I understand correctly, CC are the dead soldiers fought algae or other organic. FC 0 mean I don't have any live soldier available. So I am losing the battle against algae, right? I poured 5 lb cal-hypo 65% 4:00PM today, according to poolcalculator, it will raise FC to 20 for a shock. (next time I will try household bleach). Also there is no cyanuric acid at all in the pool. So I plan to put 5lb stabilizer tomorrow (according to poolcalculator, it will raise CYA to 30). I am a total newbie. All my knowledge came from reading pool school and Tamminen's book last 48 hours. Please feel free to advice/comment. Thank you