Hello and welcome to TFP!

I can tell you a few things to get you started:
- You have algae. The sliminess and cloudy water shows it. To remove algae, we at TFP use the
SLAM Process.
- You have to stop going to the pool store for their testing and advice. That same place selling you bags of shock, pH this & that, and tabs are responsible for your cloudiness caused in-part by an extremely high CYA (stabilizer) level. The only way to lower the CYA is by changing out some water.
- You should first order a TF-100 (link in my signature) or Taylor K-2006C test kit. Either one, we don't care, but you need one of those to obtain reliable at-home results. It's not hard at all.
This must be your first priority.
- While waiting for the test kit, read the link below. It's a great place for all your questions. Don't add anything else to the water except liquid chlorine or regular bleach. Maybe a half gallon per day.
- Update your signature with all of your pool and equipment info please.
Once you receive your test kit, post a full set of those results so we can be sure of what actions to take next. Lots of folks here to help.
Your one-stop shop for all things TFP to include: ABCs of Water Chemistry, Recommended Chemicals/Levels, Test Kits, Troubleshooting, and much more!
www.troublefreepool.com