Springtails....

So i was away for the last week and when i came home i noticed that 2 of my clones looked really sick... on further inspection i noticed these tiny little white fuckers on the soil and when i moved the stalk i accidently snapped the main stalk on the plant... on looking at the stalk it didnt look right and was very very brittle.... i through out the clones, pots and soil... now i see more of them on the soil of the mother,,, i have both veg and flower area on the same room... Im really worried... the mther plant was sitting on a dish the carpet and the little bastards are crawing on the dish... can these little fuckers do damage to fully grown plants.... i work with a perpetual harvest and cant afford to lose any more plants..... Last year i had a fungle Gnatt infestation and my yield dropped by more thant half.... Lots of people are saying they're harmless but im not at all convinced... Please help..... What do i do???

Thanks Chris