I am new to this forum. I am having a new vinyl liner installed in my inground pool this week. The pool holds about 15,000 gallons I believe and we have a basic sand filtration system. I am wondering what I need to add once the liner is installed and filled with water. The old liner is very faded - I would assume from years of shock and chemicals being used. Not sure? Anyway - we would like to keep the new liner looking nice and not getting damaged for as long as we can. We have only lived here a short amount of time relative to the initial installation of the pool so I'm not sure of how it was treated in the past. In addition to the initial start up information, any recommendations on test kits? We have just used strips in the past that weren't too accurate. We basically have just thrown shock in it when it looked like it needed it and brushed it a bit to maintain as long as we have been here. We are wanting to do it the "right way" now and would appreciate any advice you could give us.