Fluval U4 internal filter Reef Zlements For that purpose a proper

For that purpose a proper calcium additive together with an accurate test kit are required

bringing more power and color where you want it

API® AQUARIUM SALT is made from evaporated sea salt and is a must-have for your aquarium

and tests parameters from 0 to 5 ppm

Fluval U4 internal filter Reef Zlements For that purpose a properOffering outstanding 3 stage filtration, increased water movement and vital aeration, Fluval U Series internal filters are the perfect solution where external filtration is not possible. Features Designed for aquariums up to 240 L Use as a primary filter for smaller aquariums, or supplementary filter for larger aquariums Position horizontally for shallow tanks, larger tanks with low water levels, or to create a decorative waterfall feature Position