I saw these products for sale the other day in the pool supply section of a department store. They are quite cheap and a bottle would last a very long time. Does anyone know if they would be safe and practical to use in hydroponics.
I saw these products for sale the other day in the pool supply section of a department store. They are quite cheap and a bottle would last a very long time. Does anyone know if they would be safe and practical to use in hydroponics.