I will be setting up my 27' round AGP in the next few weeks. Is there any benefit to getting my raw water tested for ph, TA, etc., in advance of the initial fill-up so that I can determine approximately how much chemicals I will need to add to get ph and TA adjusted? In other words, if I know the starting levels, and I know the approximate gallons in the pool, can I determine in advance how much of which chemicals I will need to add to get the correct levels?
If yes, are there any on-line testing compnaies where I can send a water sample? (I do not want to go to the local pool store since I am not purchasing a pool from them)