The feed circuit, especially restrictive feed outlets like drippers, can become blocked with salt build-up, dirt, algae, root growth and medium. To minimize this problem:
StopBLoc helps prevent irritation blockages by resisting the formation of nutrient build-up in feed-lines, drippers, sprayers, pumps, and filters. StopBloc is compatible with all types of nutrients/fertilizers, systems, and substrates. Add StopBloc to existing nutrient solution at 0.2ml/L (1/6 tsp/gal). For re-circulating nutrients, re=dose every 14 days.
KEEP OUT OF REACH OF CHILDREN.