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OH I LOVE that water color!!! So pretty!!! Have you been able to enjoy the hottub yet?
What color and material is the pool plaster?
What is the plan/purpose of the 4x4 post that was cut flush in the near end of the photo above.
Tht is an okay basic test kit. It is missing a couple important tests. The cya (how do you know it is low?) and the power test for FC. The fc test that kit had only goes to 5. You can go to the link in my siggy below to find these two tests. You might be better off just getting the whole tf-100 though as you are going to need to replace those regents fairly quick as there is not much in that kit.