Marineland Canister help

[Geodesy]

i have a 20 gallon tank setup for about 45 days now. The HOB filter was not keeping up so I bought a Marineland C220 canister. I have read it's much better to replace some of the filter media with Eheim Substrate pro. The issue is, I don't know which media in the filter I would replace. I don't remember the order of media but it has charcoal, ceramic beads and the plastic balls. Please help so I am sure to replace the correct media with the Eheim and Putin in the correct order in the filter.

 

[ImACoolguy]

Most canisters take water to the bottom and filter it upwards to go out into the tank.

depending on your space you always want a course foam pad in the very bottom to catch all the big gunk and plant material. After than a fine pad will catch all the little stuff.

Mid level I have another fine filter pad to catch any that got loose, then a bag of small ceramic filter media.

Top level I have filled with big bio media that's also ceramic and looks like turds lol.

That's my setup for my Cascade that has 3 trays.

Filter media on top is important so they pads take the heat and you media doesn't get filled up with gunk. This helps keep the water flowing a little better and helps the media last longer.


Caleb

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[Geodesy]

But which am I best to replace with Eheim? The charcoal, the plastic balls, or the ceramic beads? It has 4 trays total.

 

[ImACoolguy]

Don't really see a need for the charcoal.


Caleb

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