Winter time has set in here in Hawaii.
The pool temps have dropped to 68F, from the normal 78F -82F. As the grandchildren are so busy they have no time for the pool. It is also very expensive to keep it heated at an average price of 35 cents per kilowatt, with the heat pump. In the past I kept the temperature up but now that the grandchildren are too busy it is a waste and electricity prices have moved up.
Also in the wintertime late October thru early March, the pool gets a lot of shade from the house, but being that it is a major architectural feature of the house I cannot drain and close it.
The balance to avoid iron build-up, has as its basis a pH of 7.4 and is normally kept as follows for 78F:
At 68F the CSI is -0.47.
Could I up the Calcium (CA) to 460 for a CSI of -0.38 at 68F, or would this be detrimental in some way?
Thank you to those that might help.