Marina aquarium equipment

The Marina range spans the equipment a fishkeeper needs to actually run a tank day to day: internal filters and cartridges, submersible heaters in a range of wattages for different tank sizes, and maintenance tools like gravel cleaners and algae scrubs for routine upkeep.

Alongside the functional equipment, the range also includes decorative gravel in a range of colours and finishes, and small accessories like a floating thermometer or a breeding trap for keepers raising fry. It is a genuinely broad range covering both the tank's basic running and its appearance.

Our shelf includes a selection of Marina filters, heaters, gravel and cleaning tools rather than the brand's entire catalogue. Match equipment like a heater or filter to your specific tank size using the wattage or flow rate given on the product, rather than guessing, since undersized equipment will not do its job properly.

For routine maintenance tools like a gravel cleaner or algae scrub, any reasonable size suits most home aquariums, and the choice comes down more to personal preference than a technical specification.

Filter cartridges and media need replacing or rinsing on a schedule to keep a tank's water quality stable, and the guidance on the specific cartridge or filter model is a better guide than a fixed calendar date, since it depends on your tank's stocking level and how quickly debris builds up.

A heater is worth checking periodically once installed, glancing at your tank's thermometer rather than assuming it is working correctly indefinitely, since a failed heater in either direction — too hot or too cold — can genuinely harm fish if it goes unnoticed for too long.