hey SubterraneanHomesickBooze, you said you use advance nutrients, which ones, is it the 3, micro, grow, bloom ? if so how many ml do you use per gal? do you go by what it says or cut back?
i use sensi grow and sensi bloom but i use way less than they recommend. i also use the connoisseur or however its spelled. if you run it for 7 days with distilled water (and calmag) the pH will be pretty stable. I would go alot less on top offs.
