Soil ph level

Hello Speeler, I've never used Biobizz but have had this issue before with other nutrients. Your PH of your feed water should be about 6.5 to 6.8. When the plants use nutrients the soil drops PH anywhere from .5 to 1. I would water with straight reverse osmosis water PHd to 6.5 to 6.8. Collect the water that drips put of the bottom of the pot after you water and test the PH. Do this every time you water until PH is above 6.0. It could take a week or two then resume your feeding. Make sure you are PHing your nutrient water afterwards to 6.5-6.8.