Tanlin from CXpress is an effective treatment for fungus gnat fly and scarid fly that can infest water tanks. It contains micro crystals that the larvae eats while swimming around. The crystals perforate their digestive tracts, killing them. It does not kill adult insects, but by breaking the reproductive cycle, you are preventing more adults developing. It is a highly effective treatment but is also great as a preventative too.
Tanlin is very easy to use, just add the necessary dose to the tank, depending on the media you are using. Always follow the manufacturers instructions as it is a high concentrate liquid! It is odour free and also environmentally friendly unlike some pest control products. Tanlin contains no toxic insecticides that may be harmful to plants and animals and is suitable for use in both vegetative and blooming stages.
Recirculating systems: 1ml (40 drops)/100 litres
Run-to waste systems: 5 drops in 200ml water for each 10 litres of rooting medium
Soil or coco: 5 drops in 500ml of water
We also have plenty of other options for pest control at Straight Up Hydroponics. You can see what we have available by clicking on this link.