Your pH is fine where it is. Don't bother with adjusting it until it needs to be. If you get down to 7.0, then just adjust it up with Borax.

In a 22K gallon pool, 5.5 gallons of 6% bleach will get you up to 15 ppm. After that, each 1.5 quarts will raise your FC by 1 ppm, so you can use that as a guide. With your SWCG off, raise your chlorine to 15 ppm, (I would do this in the evening), then test in the morning and sometime during the day, adding whatever amount of bleach necessary to get back over the 15 ppm mark. Brush the pool daily, ( I would do this in conjuction with your bleach additions) so that you're knocking all the algae loose, getting better exposure to the chlorine. Hold that 15 ppm until you're not losing any chlorine from night time til in the morning, and then you can let it drift back down. Keep the pump running (but not the SWCG) and keep an eye on your filter pressure, so you can backwash it as needed (when the pressure rises 8-10 psi over your clean pressure).


This procedure is not difficult; but it does take persistence on your part to get it cleared up. If you don't fully get rid of the algae before you let the Cl levels come back down, or if you aren't consistent about maintaining your Cl levels, then you're going to be fighting algae all summer.