I have a new pool (filled in August 2012) and this is my first winter (as much of a winter that we have in Houston). My question is, which tests work well in colder water (upper 40's to low 60's) and which tests need the water to be around 70 or higer? I think I have read somewhere on here that the CYA test works best with water temps of 70 or higher, but I don't see anything on the other tests.
For the tests that need the water warmer - what is the best method to warm it up? I am guessing to just grab a larger sample from the pool and then placing that sample in a warmer water bath - but if I do this, how much time do you have after taking the sample from the pool before the tests might be off?
I have a TF100 kit with a plaster pool.