Hi everyone, I lurked on this board a few years ago when we had a pop-up Intex pool. Your advice helped me keep the water crystal clear.
Over the winter we purchased a new home with an inground pool and a separate hot tub. (I like to think of it that we purchased a pool and hot tub and a home came along with it).
Anyways, I opened up the hot tub two weeks ago. I followed the instructions from hillbilly to decontaminate the tub and refilled. I then added some liquid chlorine and also put some 1" tabs in a feeder to also get some CYA in the pool. now that the CYA is up, I'm only using the liquid.
I have the TF test kit and my numbers are as follows:
FC - 5
CC - .5
CH - 100
TA - 200
CYA - 30
Temp - 100
Water is clear. Before we go in for a soak I'll bring the FC up to 7 and afterwards I'll bring it back up to 5. The problem is that in the morning my FC is back down to .5 or 1. I'll bring it back to 5 and then when I get home from work, same thing, down to 1.
Is this normal? Since the pool is covered, I wouldn't expect to lose anything to the sun. Does the high temp of a spa somehow reduce FC?
There's something on the tub that adds ozone. What does that do? Does ozone eat FC?
Please help a new hot tub owner. Thanks in advance.