Wonder Shells and Filters, Specifically Carbon

[Lily]

Hello-

Can the carbon remain in my filters while Non-medicated Wonder Shells are being used ?

Nancy

[coco]

Yes. The carbon will not effect "reg" wondershells.

[Lily]

Great; thank you!

[bgcat249]

After adding new platys and tetras to my 36 gallon decided to go with the recommendation of adding a medicated wonder shell. I only had the large size which I added (read something about Not breaking up the medicated shells). Is this harmful in any way? Thank you

[devonjohnsgard]

You could possibly break in half, but there's no saying you are getting half the meds from the shell. It would be better for the tank size.