swimming larves in runoff

If you see small, thin white larvae swimming in the runoff after flushing your cannabis plant, it’s most likely fungus gnat larvae or root-knot nematodes. Both can damage the roots and should be taken seriously. Fungus gnat larvae are white with a black head and feed on young roots. Root-knot nematodes are even smaller, transparent, and also harmful. It could also be harmless springtails or beneficial predatory mite larvae — it depends on how they look and move. 👉 What to do: • Avoid overwatering • Use yellow sticky traps or neem oil • In case of heavy infestation: apply beneficial nematodes (e.g., Steinernema feltiae).