Hi, and welcome to the forum!
We're going to need to know a LOT more about the pool before we can answer your questions. First, we need some equipment information--if you would take a few seconds and fill out this chart, it will help...
Pool Chart Entry Form
Pool Chart Results
Second, we need to know test results on your water, taken with a drop-based kit (no strips!). "Balanced the pH, alkalinity and brought the chlorine up to a suitable range" doesn't really tell us what we need to know.
Third, we need to know whether the fill water has metals in it, and we need a list of the chems that have been used in the pool so far (ingredients, please--not just product names like "shock").
If you'll supply that info, we'll be happy to try to help!
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