Hi, This is the first time that I've had an extended slam with difficulty getting rid of the cloudiness post algae. (Might have to do with fact that we opened pool a couple weeks later than usual or that I was out of commission with Covid and didn't realize until later that dear hubby wasn't quite on top of it so we lost time. )
In any case, I originally thought my equipment was broken because the jets weren't expelling water. From reading here, I realized the filter was probably gummed up with dead algae. (we never had to backwash DURING SLAM before. I always did it after , right before I topped up the CYA). I've had to backwash 4 times a day the past 1 1/2 days. Getting closer, although the water isn't crystal clear, at least I can see the pool drains in the deep end and the spots that I missed when brushing the pool.
HOWEVER, I've had to put in municipal water since we lost so much was drained during all the backwashing and CYA is non existent (it was already low because my husband had starting shocking the pool without adjusting that). Can I add CYA while the SLAM and high chlorine levels are in process? I don't want to let up on the SLAM, but its hard in this 90 plus degree sunny weather we are currently having to keep up. Also, Alkalinity is low , should I bring that up now? or just wait until we are done? I'm also going to end up with a pH problem this year because I always count on the slightly acidic rainwater the pool collects over the winter to reset pH lower, but our municipal water is a high pH. I'll likely have to add more water before I'm done.
FC -12ppm
CC- 0.5ppm (Maybe .5-1ppm)
pH 7.8
Alkalinity- 40ppm
CH -60ppm
CYA - not measurable
Also, my chemicals are running low (I've ordered more, but since slam is lasting longer, started on Thursday, I've gone more than I've needed in the past 6 or 7 years.) I have some older 871 and I simultaneously tested a couple batches with the older stuff and the more recent stuff. The older stuff seems consistent , but requires a few extra drops to clear the pink (i.e. seems to overreport FC by 1+ppm. In a pinch can I use that to test (assuming that my actual chlorine levels are 1.5 ppm lower?)
Boy, an hour sure goes fast when SLAMing!
In any case, I originally thought my equipment was broken because the jets weren't expelling water. From reading here, I realized the filter was probably gummed up with dead algae. (we never had to backwash DURING SLAM before. I always did it after , right before I topped up the CYA). I've had to backwash 4 times a day the past 1 1/2 days. Getting closer, although the water isn't crystal clear, at least I can see the pool drains in the deep end and the spots that I missed when brushing the pool.
HOWEVER, I've had to put in municipal water since we lost so much was drained during all the backwashing and CYA is non existent (it was already low because my husband had starting shocking the pool without adjusting that). Can I add CYA while the SLAM and high chlorine levels are in process? I don't want to let up on the SLAM, but its hard in this 90 plus degree sunny weather we are currently having to keep up. Also, Alkalinity is low , should I bring that up now? or just wait until we are done? I'm also going to end up with a pH problem this year because I always count on the slightly acidic rainwater the pool collects over the winter to reset pH lower, but our municipal water is a high pH. I'll likely have to add more water before I'm done.
FC -12ppm
CC- 0.5ppm (Maybe .5-1ppm)
pH 7.8
Alkalinity- 40ppm
CH -60ppm
CYA - not measurable
Also, my chemicals are running low (I've ordered more, but since slam is lasting longer, started on Thursday, I've gone more than I've needed in the past 6 or 7 years.) I have some older 871 and I simultaneously tested a couple batches with the older stuff and the more recent stuff. The older stuff seems consistent , but requires a few extra drops to clear the pink (i.e. seems to overreport FC by 1+ppm. In a pinch can I use that to test (assuming that my actual chlorine levels are 1.5 ppm lower?)
Boy, an hour sure goes fast when SLAMing!
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