The plants are in fox farms ocean mix with a PH of 6.4. I gave them a teaspoon of 3-0-3 per gallon the the day after the flush because i thought it was a nitrogen problem. Could it be a fungus? I really think it is over fert, but I give them a teaspoon of 0-13-14 and a teaspoon of 3-0-3 every watering. Too much? (every watering being about 1 a week)