Hello, back for opinions / suggestions again. Setup is a standard 24' AGP, single return jet, bottom drains and of course a skimmer. I used to have a return jet assembly with a built in light which directed water to the side along the wall instead of my now standard return jet eyeball with 3/4" opening (looking online it appears to be a Hayward SP1419D) which I can't direct much to the side (also sick of the dumb eyeball falling out so easily). So I'd like to replace the jet with the slotted type which I believe will help increase circulation. I am looking at Hayward part# SP1419A, but I am wondering about the flow out of what looks like a smaller opening. Is the flow out of this slotted one very close to what I have out of the standard eyeball one? Is it a direct replacement? This is NOT a pool with multiple returns.
Also while I am posting this issue, I am experimenting more with turning my return jet up for aeration in order to bring my falling pH up (my pH slowly falls over the course of about 2 weeks - guessing from about 7.6 to 7.3 in 2 weeks time). I am finding that even with as much aeration as I can create by turning that jet up (which is a lot), the pH hardly goes up at all. This is with no solar cover in the way of the jet either. Any ideas? How quickly should serious aeration cause my pH to increase?