Two-part dosing question

First time using 2-part, and first time using dosing pumps. I am wondering how much everyone doses per day. BRS says .2 ml per gallon (20 ml for my 100 gallon setup) is a good starting point. But talking to a friend in Portland he tells me he doses 144 ml per day for his 90! Now, I know to start slow and test weekly to determine my usage, but I am wondering how many ml per day/ gallon you ended up with as the final number. Any input would be helpful.

Thanks as always,

Helen