Seachem Purigen 100 mL Marine Granules Ventilation slots:Ventilation slots in the

Ventilation slots:Ventilation slots in the lid of the filter and aeration grooves in the outflow ensure that water returned to the tank is fully oxygenated and maximize gas exchange during filtration

All Brightwell Aquatics liquid water care supplements are made with purified water and high purity materials

then you should dose enough for the amount of water in the whole pond

then this whole process will not work

Seachem Purigen 100 mL Marine Granules Ventilation slots:Ventilation slots in theSeachem Purigen removes soluble and insoluble impurities from water at a rate and capacity that exceeds all other competing products by over 500%. Premium synthetic filter resin. Highest organic removal capacity. Possesses enhanced capacity vast surface area spherical and macroreticular. Helps control ammonia, nitrite and nitrate. Color changes as it exhausts; easily regenerated. Overview: Purigen is a premium synthetic adsorbent that is unlike any