406s Black Sponge Pad - Twinpack from Aqua One - (25406s)
This is a genuine and original specification replacment 406s Black Sponge Pad - Twinpack manufactured by Aqua One for use with Advance 2250 and Advance 2450 external canister filters, providing physical and biological filtration. The 406s Black Sponge traps medium sized particles of aquarium waste, where they are more easily broken down by friendly nitrifying bacteria.
Replace every 6 months
406s Black Sponges sit in the top tray of your Advance canister filter and work very hard to trap aquarium debris and waste where it can be broken down by friendly bacteria. Black Sponge Pads have a smaller cell structure than Blue Sponge Pads and consequently require regular cleaning. Whilst it's possible to rinse and re-use the 406s Black Sponge in your Advance filter, it's best to replace every 6 months due to degredation of the cell structure.
Once a month, (or sooner if you notice reduced waterflow) remove the impeller cover and check that this isn't blocked with aquarium waste and that the impeller can spin freely. Pipework and fitler taps should also be checked every couple of weeks to ensure that there are no blockages restricting waterflow. It's a good policy to check the condition of filter media pads on a regular basis as these will usually become clogged with aquarium waste fairly easily. Both Blue and Black sponges in a little aquarium water and re-use, replacing every 6 months or so. Polymer Wool Pads should be changed as necessary, usually every 4 to 6 weeks.
Changing the 406s Black Sponge
Aqua One's Advance canister filters are reasonably easy to service, so changing the 406s Black Sponge isn't a difficult process. First of all disconnect the power supply, then turn the filter taps off. Unclip the four clamps that hold the head in place and separate the body and head. The 406s Black Sponge is located in the top tray of your Advance Canister Filter. The Black Sponge Pad should be changed every 6 months or sooner if the cell structure has become compressed enough to restrict waterflow.
If you have any questions regarding the 406s Black Sponge or are unsure of exactly which Advance filter spares and accessories you require, please do contact us. We are the UK's leading authority on all that is Aqua One.
* See all spares and accessories for Advance 2250 and Advance 2450 external filters