funky smell, plus lil white larva

so after thinking root rot, i starting flushing both now cause both seem to have the rotten egg smell plus little white looking larva coming out the drain off out of both hempy buckets. any ideas on how to fix? flushing with water and fg hp. any ideas on how it could have happened? usually no colder then 67 in room, 50% humidity and gets no hottoer then 78. use exhaust fan, plus an intake fan and another fan to circulate the air in the room. was watering/ feeding every other day.

also using gh flora 3 part series and also was feeding some molasses in the mix about 1tsp to a gallon. guess might have to invest in a complete hydro system or go back to soil. not sure how it happened. real bummer, if anyone has any ideas or cures, both plants into their 4week of flower, blueberry and kandy kush.

You could try some mycorrhizae - the liquid would be my weapon of choice.