Skipped the airpump and pushed the sponges into the water intake of small, hang on the back power filters. Total quiet.
We love these filters! Have about 150 working in 25 tanks!
This is all we use…..squeeze a couple of times and good to go again!
Love these sponge filters.
It is the second time that I buy sponge filters, I am very happy and I would buy again
Very pleased with this sponge filter. Easy to set up. Super Duper easy to clean. Give it few squeezes place it back and it sinks to the bottom on its own. Thank you .