Hello all,
Many thanks for this forum.
Last year I had recalcitrant pink algae (bacteria), and after reading TFP school over the winter, I guessed I had high CYA since I've used pucks from the pool place for 25 years. And I was right
Pool was opened May 3 and pool center added 5 gallons chlorine (I think ).
On May 4, using TF-100 I measured:
They had me add another 5 gallons of chlorine to pool, which I did on May 5.
TODAY MAY 6:
So with a CYA of ~ 100, I read from the chart that my Shock FC should be 39, so I'm not far away .
I can slowly empty and replace the pool water, but I have a well...I can only do a little each week...so getting rid of the CYA will be a long-term project.
Please, am I off to a good start for the moment? The pool is getting clearer each day. I cannot do any testing from Monday to Thursday as I will not be at the house.
The big, but longer-term question, please, if it is appropriate to approach this now --
I am at the house only on weekends and I really don't want to invest in a SWG at the moment.
After I get the pool in initial good shape....
1 -- Can I shock with enough liquid chlorine each Sunday to hold the pool for 4-5 days (from what I've read this is not possible,, but why?...is it because my FC would need to be too high on Sunday and there is a negative in that (maybe bleaching?))
2 -- With a CYA of 100, I certainly will NOT continue using any dichlor/trichlor (which the pool company has giving me for years). I could use lithium but it is too expensive. Could I use calcium (hypochorite?) since my CH is relatively low?
Any advice appreciated, thank you very much!!
Justin, weekend pool owner
Many thanks for this forum.
Last year I had recalcitrant pink algae (bacteria), and after reading TFP school over the winter, I guessed I had high CYA since I've used pucks from the pool place for 25 years. And I was right
Pool was opened May 3 and pool center added 5 gallons chlorine (I think ).
On May 4, using TF-100 I measured:
Water very cloudy
FC 1.5
CC 1
pH 6.8
CYA ~ 80
(no other measurements sorry).
On May 5, I took water to pool center (for the last time!), and they read the same as above except a CYA of 100 (of course they had no idea of the relationship between CYA and how much FC is needed).FC 1.5
CC 1
pH 6.8
CYA ~ 80
(no other measurements sorry).
They had me add another 5 gallons of chlorine to pool, which I did on May 5.
TODAY MAY 6:
Water moderately cloudy (getting better)
FC 33
CC 0.5
ph 7.2
TA 70-80
CH 125
CYA - I didn't repeat.
FC 33
CC 0.5
ph 7.2
TA 70-80
CH 125
CYA - I didn't repeat.
So with a CYA of ~ 100, I read from the chart that my Shock FC should be 39, so I'm not far away .
I can slowly empty and replace the pool water, but I have a well...I can only do a little each week...so getting rid of the CYA will be a long-term project.
Please, am I off to a good start for the moment? The pool is getting clearer each day. I cannot do any testing from Monday to Thursday as I will not be at the house.
The big, but longer-term question, please, if it is appropriate to approach this now --
I am at the house only on weekends and I really don't want to invest in a SWG at the moment.
After I get the pool in initial good shape....
1 -- Can I shock with enough liquid chlorine each Sunday to hold the pool for 4-5 days (from what I've read this is not possible,, but why?...is it because my FC would need to be too high on Sunday and there is a negative in that (maybe bleaching?))
2 -- With a CYA of 100, I certainly will NOT continue using any dichlor/trichlor (which the pool company has giving me for years). I could use lithium but it is too expensive. Could I use calcium (hypochorite?) since my CH is relatively low?
Any advice appreciated, thank you very much!!
Justin, weekend pool owner