We don't really think too much of the accuracy of teststrips. Better to use a drops-based kit. At any rate, if your ph truly is 6.2, you need to raise it ASAP! Any reading below 7.0 is acidic and can damage your pool. Add a box of Borax slowly to the skimmer while the pump is running. Wait a few hours to let it circulate, then retest and redose until you get it to at least 7.0. Then start adding only a half or a third of a box at a time. Actually, aim for 7.4-7.6.
Also, add 3 quarts of plain, unscented bleach to the skimmer. That should take your FC to about 4.5 or so. Without any stabilizer in your water, you'll need to test morning and night and each time add some more bleach. Buy some cya. You may be able to buy it at Walmart, Lowe's, Home Depot, or you may have to go to a pool store. It may be called stabilizer or conditioner. Check the ingredient label. If it says cyanuric acid or isocyanuric acid, it is what you want. Add enough per label directions to get you to a reading of about 30. Add it to the skimmer. Do not broadcast it across the pool like the label may tell you to do. Then, don't retest, add more or backwash for about a week to let it dissolve. After you start getting a cya reading, you should be able to test and dose with bleach in the evenings only, but in the meantime, it will be necessary to do it morning and evening or you won't be able to keep any chlorine in the pool.
You can raise your alk with baking soda - again, add it to the skimmer. 80-125 is a good level. Add a box at a time until you start getting a reading, then smaller doses.
Hope this helps.
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