Thanks for the response!

I can't tell from the canister of trichlor tabs if they contain metals (1% "other" ingredients). And the $20 referred to the entire canister (approx 2.4 lbs) of 1" tabs

I will take your advice and not use the mineral pack!

My plan is to use up the one canister of trichlor tabs and then test on my own (ordering taylor 2006a on fri morning) and use the BBB method.

Should I wait to add anything until the pool is completely full?