Like I said befor. I used to be a firm believer of MG soil but after I tried out the new soil and once I had control of what the plant feeds off of and how much, results have been 99% better and much faster. I now have no problems with PH fluctuation, as the MG soils fluctuate contantly, especially in flower. I honestly haven't had one problem since I switched. I know that many people are firm believers as well but I suggest you try without it just once.