Ok here is what I've done.
I took the water, 130ml, and checked the PH that was 7,6.
I've added 0,26ml of Bio Grow(it's about 2ml/L) and the PH dropped to 7,4.
I've added 0,39ml of Bio Bloom(it's about 3ml/L) and the PH dropped to 6,9
So if the PH doesn't change over time if you let the...