Product Description Sachem tidal 110 matrix - matrix pouch high capacity bio filtration that controls, ammonia, nitrite and nitrate for marine & freshwater. Directions Use 250 mL of Matrix for each 200 L (50 US gallons) of water. Matrix may be placed in any kind of filter, wet or dry, and is particularly effective in a canister filter while also working well in drip tray systems.
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