Alkalinity, ph and diamond brite plaster.
Leslie's 4/19/15: CH=250 CYA= 50 TDS: 2000 Pho: 2500
Tues 6/9 home results: Clear
On 6/5 my home results: pH=7.5 TA= 70
Years ago CYA was over 150. My gift from Leslie's was black algae, which I still need to get in the pool with puck and confirm. Many small, black spots, mostly in deep end and borders of small tiles on steps.
Difficult to eradicate in a diamond brite which we REGRET! This algae is not my issue to discuss today, but the fact that the pH bounces with bleach. I need my chlor more effective than at that pH. Now that pool running 24hr, I generally pour 4 pts HEB 8.25% at midnite. In fact, all that has been added from 6/5 to 6/9 was the daily midnite 4 pts bleach. I'm still buying a lot of acid. And my other half is upset that the low TA is damaging the diamond brite (lit says 90 or higher). The TA test result of Leslie's Taylor kit-pink-red??? Don't like that test.
We don't have a pool cleaner. What does it matter if there is debris on the pool bottom or in my DE filter after vac? Either place my chlor must kill, right? Can only vac to waste after heavy rains like earlier this month in TX which I did.
I feel like the pool is controlling me, instead of the other way around. Other home owner giving me flack about chasing my tail all the time. And it's all new equipment-makes me nervous.
Also, the fact that there are a lot of little black spots means I have to brush with a large brush often. What bristles should I be using for a diamond brite plaster that is ~10 yrs old already if I do have the black algae? And where can I buy a brush whose bristles don't shed like a dog and clog my DE? There is lots more but I'm not at home with the info. Thanks. Paula