Aquatop Forza Carbon Cartridge for FZ13UV or FZ6 Aquarium Controller in which the alkalinity spikes

in which the alkalinity spikes just after dosing and then gradually decreases throughout the course of the week

and trace elements at concentrations at their respective average natural seawater concentrations

then dosage may be increased by 2 ml or 2/5 capful or one pump additional per 16 US-gallons every day

All-Off: Hold the driver button for 6 or more seconds to turn the pump off

Aquatop Forza Carbon Cartridge for FZ13UV or FZ6 Aquarium Controller in which the alkalinity spikesReplacement Carbon Cartridge for the Forza FZ13 UV AQUATOP's Replacement Carbon Insert for the FORZA Series Canister Filter. Insert is filled with AQUATOP's own high quality Carbon for maximum effectiveness. Outer layer is made of a strong poly fiber to mechanically filter out large dirt and debris. Extremely easy to use and install.