Test your FILL water, and report those values ASAP. Start the bucket test for lime softening AND metals on the FILL water.

Before we try to clean up what you've got, I want to know (1) if there are metals in your pool and fill water, and (2) if it would be easier for you to start with fresh water.

Don't use the polyquat, Unicels, etc. until we've worked out the best way to go. Keep an eye on the METALS bucket test; if you see brownish-orange sediment, you'll need to get a bottle of HEDP, as well. But, DO NOT put it in, yet.

Meanwhile, you can use bleach to chlorinate each night. If you aren't brushing up algae, 1/4 gallon of bleach each evening should keep your pool on track, till we work out what to do. If you want to swim, check the water -- if the OTO is yellow, you're good to go.