I live near Houston, so it's getting warm and sunny down here.
I have a 3 gpd Stenner pump with an electronic timer. I use liquid 8.25% bleach. I am having some difficulty maintaining a FC level that I consider acceptable. Water stays clear, but mustard algae (??) starts to form on the shady part of the pool.
FC= 1.5ppm (I know this is low)
I've just added enough CYA to boost the CYA to 70, and bumped the calcium to get to closer to 300.
The big issue is maintaining a high enough FC level. My question is about the injection times for the bleach. Currently, I do three 40-min intervals a day (about 10 oz of 8.25% bleach), at 8:00 am, 12:00 pm and 8:00 pm. I've just added two more of the same intervals at 1:00 am and 3:00 pm. So, beginning today, that is a total of 50 oz per day. As I was adding the new injection periods, I wondered about whether there is a strategy for WHEN to put in the bleach. Am I better off doing it all over night, and not in the middle of the day, or spreading it out like I do now, throughout the day and nite. The day-time injections may be sub-optimal, as it's the sunniest part of the day.
So, what say you all?