Ah ic.. the reason that im asking because i saw reviews of Big1 and 4derm, and others were able to add 4 grams of other ph in it but the company claimed only 1g could be added.. but anyway im only thinking of adding 1.5g for each so maybe im still safe
if the powergel could fit 15 then ill use it, but nobody has every tried it so i wont gamble my money on it..