so my freshwater indian dwarf puffer has a fungal infection so i picked some stuff up from my lfs; the problem is that i only have a carbon filter for the sponge filter i have running and i don't have any cycled filters i can use right now. if i take the sponge off will it mess up my cycle? this is the first time i've had to use any medication for a fungal infection and i just want to make sure it works right. thank you!!