Humid acid is not optimal for hydro systems. For hydro use fulvic acid.
Try this 1 part fulvic acid, 1 part carbo load, 1part em1, 100 ml great white to 4 parts water. Put this mix in a 5 gal bucket and secure the lid on tightly. Shake vigorously for 2 days then use 5 ml per gallon. It's a...