I am thinking of adding 20 pounds of bioguard optimizer plus purchased last month. basically it is the chemicals that i was unable to return to the pool store. My TF 100 test results are all inline. TA is 90 and PH is 7.8 and I will lower to 7.4 before adding. Water is perfectly clear. However, i have researched and found conflicting information on the Optimizer plus. pool math says it will dramatically increase PH and TA requiring a lot of acid to lower PH. however, other readings indicate that it is relatively PH neutral but will need some acid to lower a couple of gallons. My Borates are currently around 9 per the LPS (i used optimizer several years ago but i drained more than half of the pool when opening this year). I don't recall the affect on the pool when used previously.
A little comfort in directions would be greatly appreciated.