Does Filter Media Need To Be Kept Underwater At All Times, Or Just Wet?

  1. Susiefoo

    Susiefoo Well Known Member Member

    Probably a silly question. Once my tank has finished cycling I am planning a big water change. I have an internal filter that sits quite high up in the tank as per the instructions. I will switch it off before draining the water but the water level will come down to below the bottom of the filter, before I refill. So there might be 10-15 minutes or so when the media (sponge) is out of water. But still damp and enclosed in the filter.

    Is this ok? Or will the cycle coming crashing down?

    Thanks in advance!
  2. Fashooga

    Fashooga Fishlore VIP Member

    It should be fine.
  3. AllieSten

    AllieSten Fishlore VIP Member

    It will be fine. It just needs to stay wet. It won't dry out in 15-20 minutes.
  4. OP

    Susiefoo Well Known Member Member

    Brilliant thank you so much :)

    I'll be back with more daft questions soon...!
  5. aquatickeeper

    aquatickeeper Fishlore VIP Member

    You should be fine. Make sure it doesn't dry out, if it does, then you lost all the BB.