Internal Filters Internal power filters offer the ultimate in convenience. Choose an appropriate model for your tank size, slot the filter into place in an available corner and plug in. What could be easier? Internal filters are also really easy to clean with a full strip down and clean out typically taking about 5 minutes. This type of filter is most commonly utilised in tropical and coldwater setups.
External Filters If you require an ultra efficient mix of biological, chemical and mechanical filtration capacity then there is an external canister filter to suit your setup. Modern canister filters are very easy to clean and maintain as well as being almost silent running and very discreet. Canister filters are usable wherever great, flexible filtration is required and are equally at home in marine, tropical or coldwater setups, from smaller, more modest aquariums, right up to those holding several hundred litres.
Marisys 240 Sump Filtraton System Now in Series Two guise and featuring many design improvements including a much more powerful protein skimmer and far safer overflow box the Marisys 240 pro remains Britains's favourite all-in-one marine filtration system. You cannot beat this product for the money. Buy with confidence.