I received a Diatom Canister Filter (D1) with the aquarium setup that I upgraded to. An older one, but it works great- except it kept getting clogged. As in every day it would clog and we'd have to take the whole thing apart. My husband wanted me to buy a new filter and toss this one. I'm glad I didn't.
In this video, I go over how we took it apart, rinsed the bag so we can reuse it, then added new charcoal. We also reinstalled all the pieces and put it back in the tank.
Since doing this, we've had no further issues. Yay. I hope this is helpful to someone... these filters are quite neat. Note that we had black charcoal powder we used before and the newer stuff I ordered is white. Way better.
Note that towards the end of the video, I mention that the manual states you can keep the powder from going back into the aquarium water by starting up the process of reinstalling the filter in your tank by using a container of water hooked to the side of the tank. We still need to get a container that will work for this so I'll try to update when we find something.
Eh oh yeah... sorry about the screaming child. My 2.5 year old was throwing a tantrum upstairs while we were videotaping part of this. Hopefully it can't be heard too loudly.