If you have lots of house plants, it may be worth applying a biological control. CX Horticulture  (Canadian Xpress Nutrients) TaNLiN is a fly treatment for Fungus gnats, also known as Sciarid Fly, are one of the most devastating pest to any indoor grow.

Inconspicuous at first, you'll first notice gnats in your grow space and on the growing media and then a decline in plant health. They can be tricky to spot as they live among the plants roots.

Each Fungus Gnat female lays 200 eggs in warm conditions. The eggs hatch out into larvae which immediately start eating the plant’s roots. The larvae, although small, are eating machines. They munch their way through the root system quicker than the plant can grow new roots. This causes damage and hurts the plant’s ability to take up water and nutrients. The plant is also more susceptible to plant to infection to root diseases.

In short, they can totally wreck the plant’s root system without you being aware of what’s going on among the roots. When the plant’s root system is wrecked, so is your crop. The maggots will become adults in two weeks and lay their own batch of 200 eggs per female.

CX Horticulture Tanlin 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. Even though you use Tanlin, you may still see an occasional Fungus Gnat, don’t be alarmed. The Tanlin will be working. Remember that the maggots must first eat the Tanlin for it to be effective.