Not with that crappy m/g in it. The more he flushes the more it will release those shitty nutes. As I said,,,, Why did ya ruin that foxfarm,lol.Your best bet would be trans it into all foxfarm and hope for the best................Unfortunately there are nutrients that are going to continue to slowly release throughout the grow. I try to start with a neutral medium so that I have absolute control over the nutrient schedule. Good flushings will certainly help. Good Luck.