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HI im new at this game. need some guidance. Ihave a hydroponic flood and drain sys. My water starts out with ph of 8.2 Ive added acid (nitric-phospheric-sulfheric) combination used to clean stainless steel milk line.this droped ph to 6.6 I then drop seedlings in hydroton .peat puck and all. I then add fert.5-11-26 at recomended half strentgh. my ppm is 320 and ec of 47. will this work? Im not sure how often to flood, my 70 gal. grow tray fills in 3 min. Im prety sure you don,t flood in off light hours? can I mix fert.? in 10 days I,ll add monty,s joy juice 8-16-8 thanks! all help app.