CX Tanlin Nil Nat
Fungus gnats also known as Sciarid Fly are one of the most crop devastating insect pest that any indoor grower is likely to encounter equally as bad as spider mite. They can be even worse than spider mites because they do their damage well hidden amongst the roots. At least with spider mites provided you are watching your crop you can spot them as soon as they appear. However the first sign Fungus Gnat is usually an abundance of small 3-5mm long flies on the surface of the root ball or medium in which the plants are growing and by this stage the plant will be suffering. Each Fungus Gnat female lays 200 eggs in warm conditions. The eggs hatch out into maggots which immediately start eating the plant’s roots. They damage the plant’s ability to take up water and nutrients. The damage they cause also exposes the plant to infection to root diseases.
DON’T WAIT UNTIL YOU SEE ADULT FLIES BEFORE YOU START TREATMENT. Do what the label says (and what commercial growers do) and use Tanlin as a preventative. Root diseases such as Pythium use the damage caused to the roots by the Fungus Gnat maggots as an entry point. Canadian Xpress Nilnat is a biological control for Fungus Gnats. It is a microscopic crystal which when eaten by the Sciarid Fly maggots swells up in its gut perforates the gut wall and kills the maggot.