Aquarium accessory jbl phosex pond

For pond water suitable for fish and plants: pond filter granules. For effective removal of phosphates, the basic nutrient for algae. Easy to use: fill bag with granules, rinse under running water, insert between filter media in pond filter (or in special filter media compartment). Deprives algae of their basic food: significant reduction in high phosphate levels (after 24 h). Effect durant approx. 3 months. No side-effects: harmless to fish, no aluminum diffusion, suitable for tous standard pond filters with filter media containers. Included in: PhosEx Pond Filter antiphosphate treatment, mesh sachet