Fluval 407 external Canister Filter, 150-500 L Peaceful fish the presence of Sulphur in

the presence of Sulphur in much lower or higher concentrations from the normally found in the seawater can lead to bacterial issues

it is important to check its levels through ICP analysis

Maintaining a correct magnesium concentration is therefore very important and is indirectly responsible for fast coral and calcareous algae growth by virtue of making the maintenance of correct calcium and alkalinity figures possible

Harmless to filters and all species of fish

100% natural

Fluval 407 external Canister Filter, 150-500 L Peaceful fish the presence of Sulphur in07 series marks the 7th incarnation in 4 decades of Fluvals top selling canister filter family worldwide. Not only does the latest generation incorporate the power and reliability youve come to expect from the leader in aquatic filtration, but it also features several new performance upgrades that make it up to 25% quieter and more robust, energy efficient, Flexible and easier to use than ever before. Features Fluval eTEC (Efficient Technology)