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You can drain and start over if you want to, but you need to look at the cost of water and see if that's really feasible--I wouldn't drain, I'd just fix the water you have. However, your stabilizer levels are really high , so unless you want to run a high CYA-high chlorine pool (I do--and find it much easier!) you will need to drain and refill some of the water in order to lower your stabilizer (CYA) levels. Do you have metals in the water? If so, that needs to figure into your decision as well.
First off--do not use the super algae guard, unless the ingredient is 60% polyquat. Most algaecides will make your problems worse, not better. If you have algae, the fix is chlorine, and lots of it.
Second--I assume the "Pool Brands Quick dissolving shock" is dichlor? If so, stop using that, because your CYA levels are already high enough that you have to maintain 8-15 ppm of chlorine at all times to keep the algae away. I wouldn't use cal-hypo either, because your calcium is already getting high, so that pretty much leaves bleach (or liquid chlorine if your state sells it) to use for chlorination.
Since your chlorine has been way too low, I suspect that algae is the problem. You can verify this by testing for chlorine at night and again in the morning, to see if you're losing any chlorine overnight. At any rate, the answer is to add chlorine, and lots of it. With a CYA over 100, this means taking your chlorine level up to 25 ppm and holding it there until the pool clears up, and until you're no longer losing chlorine overnight. At that point you can let the chlorine come back down, but with your CYA that high, you can't ever let it come down below 8 ppm.
If you'll fill in this short chart with info about your pool, it will help us advise you better...
Pool Chart Entry Form
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Originally Posted by aylad
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