Adding the pH isn't going to fix cloudy water. With a CYA of 80, are you being diligent about maintaining Cl levels no less than 5? Is this cloudiness new or is it something you're still dealing with from when you first posted? l If the water cleared, and is now becoming cloudy, then you need to shock the pool. If it's remaining cloudy after shocking to clear up algae, then you need to keep the filter running and just give it time to filter out. If the cloudiness happened when you added the Borax, it could be that it just needs more time to completely dissolve.

Can't help you with the pool light issue--but will be interested in the result of your bucket test.

Janet