CX Horticulture - TaNLiN TaNLiN is a biological treatment for the fungus gnat (Scariad Fly). Safe, non-toxic nutrient additive used to keep root system free of unwanted visitors. There is no withholding period and it can be used right up to harvest. Tanlin is effective in all types of hydroponic systems as well as in soil, compost and coco fibre. It has an extremely high dilution rate giving the grower a product that can also be used as a preventative measure against these troublesome pests without breaking the bank! TaNLiN is added to your nutrient solution and gets to work at the source of the problem by killing the larvae that are laid by the adult flies around the roots of the plant. It is these larvae that do the damage to your plants by eating away at the roots. Tanlin works by depositing a small crystal by the roots of the plant that the larvae eat. This crystal then swells inside of the larvae causing it to burst and die. You will notice that after a period of time the number of flies in the grow room will start to diminish as the larvae are being wiped out.