BEFORE PLACING YOUR ORDER CONTACT US SO WE CAN CONFIRM AVAILABILITY AND OFFER YOU A DISCOUNT CODE. YOU MAY DO THIS VIA CHAT OR EMAIL [email protected] SEND US THE PRODUCT NAME AND WE WILL PROVIDE THE DISCOUNT CODE. WE PREFER CHAT TO GET RESPONSE.Our external canister filter can effectively cultivate, maintain and rebuilt a healthy ecosystem of your tank. It is inbuilt special 4 filtering layers from up to down to purify water and besides, at the top and the bottom of the filter barrel separately leave space for you to place different media to reach additionally biological filtration. Additionally, it adopts effective 6W water pump which provides 105gph/400L/h flow rate and 0.85m/33.46in H-Max to speed up water circulation and filter.