Single DI Canister frozen or other gasses

or other gasses

When trace element levels start to get low corals can lose their color and stop growing completely

the ID is on a sticker:

Compact & waterproof design fits right in your pocket so you can take it anywhere

Single DI Canister frozen or other gassesSingle Stage deionization canister. Perfect for adding a DI stage to your RO system or adding an additional stage to your current system. Comes with the Canister, Cartridge full of DI resin, and 5 feet of 1 4" tube. Features Perfect for adding a DI stage to your RO system or adding an additional stage to your current system. Canister comes with cartridge full of DI Resin Cartridge is refillable 5 feet of tube " Port Easily install in less than a minute