i water them every 3-4 days with techna flora starter kit for success 1/2 stregnth, there in mg soil:-( they get a shot of c02 1x daily, i use well water that sits out for 2 days before i use it, its ph is a 7 and runoff is 6/6.5 with the exception of 2 that have a ph runoff of 5/5.5 the lights...