What is this plastic thing attached to the bottom of my tank?

[rgoelmsft]

Hi --

I bought a used 30-gallon aquarium from somebody. At the bottom of the tank, there is a plastic ribbed "flooring" with a bunch of these other plastic frames attached. What are these green and blue plastic frame thingies for? See attached photo (or visit https://test1.ourschoolpages.com/Image/Products/PlasticThingies.jpg


Thank you!
--Rajeev

 

[Pandicorn]

They look kinda like the frames you put in filters, but they would have sponges or charcoal bags or whatever in the. Can you take a pic from the top??

 

[mikem691]

The white frame is under gravel filter and the frames realy don't belong He may have has filter pads on them to help with filtration. I would ditch the whole set up and get a hob or canister filter.

 

[1998golfer]

the green plastic things are frames from a tetra whisper. I know because I had one. The blue one is likely the same thing, maybe for a different sized filter or a different brand... Not sure what they would be doing in the gravel of a fish tank, however.

 

[toddnbecka]

My best guess would be that for some reason the previous owner used the filter cartridges instead of substrate for biofiltration, though it would be a very inefficient setup. Better to simply use a sheet of bulk filter media cut to fit the bottom of the tank on top of the UG filter plate and use a few rocks to help hold it down.

 

[Mebbid]

My best guess would be that for some reason the previous owner used the filter cartridges instead of substrate for biofiltration, though it would be a very inefficient setup. Better to simply use a sheet of bulk filter media cut to fit the bottom of the tank on top of the UG filter plate and use a few rocks to help hold it down.

They probably used the frames for carbon.

 

[jaketetra28]

The green ones are for a tetra whisper 10i filter and the blue one is for a larger model. You basically make your own cartridges with them with a filter floss like bag that goes over the frame and activated carbon goes inside!


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