For the prevention of Scarid Fly infestation
Use as a drench to water by hand
Usage rate 5mL per litre in a watering can as a drench to semi dry media as a one off treatment.
Use as a drench in your nutrient tank
To kill scarid fly eggs and larvae in media use Scarid 10 at 0.5mL per 1L in the nutrient tank minus nutrient. Run for 2 hours, dump. Flush. Remake nutrient tank.