Review on 🐠 Optimized Aquarium Sponge Filter - Medium - Low Maintenance for Extended Cleaning Intervals - Ideal for Tanks Above 5 Gallons - Fish Tank Sponge Filter - Similar to ATI Pro or Aquarium Co-Op Filter by Liz Garcia

Very good foam filter - my drawing shows it used with a standard 1 inch air stone. To use the diffuser with this filter you have to pull the center out which is easy and cut the connectors to the center post where the air hose goes in - again very easy - and then just attach the diffuser to the top of the filter inside, connect hose outside, finished. is a low whisper, and the standard airstone I used doesn't create a large bubble effect on the water surface. Highly recommend - I need a filter that doesn't create a lot of water flow in my aquarium and this works great on purpose - the bubbles also add a nice backdrop to the aquarium