GHL Upgrade eX For 3.1A/N for Aquariums Controller System Puppy Food biofilters

biofilters

and it has no effect on the pH of the water and lasts the life of the aquarium

Polygluconate contains no nitrogen or phosphorous

fiber and carbohydrates

GHL Upgrade eX For 3.1A/N for Aquariums Controller System Puppy Food biofiltersThe GHL Upgrade eX For 3. 1A N is an expansion kit used to upgrade a GHL ProfiLux 3. 1N A T aquarium controller to a ProfiLux 3. 1N A T eX version. The "eX" (eXtended) version includes additional ports and features not available on the original models. Key Features Added by the eX Upgrade Upgrading to the eX version provides several additional hardware features, including: Conductivity Ports: Switchable ports for measuring either fresh or saltwater