Sponge Filter on a Light Timer

[Sorg67]

I have both a sponge filter and HOB or canister on my tanks. The aquariums are in a guest bedroom. The hum of the air pumps may be disturbing to some guests. Therefore, I put the sponge filters on the light timer. They run about 9 hours a day. Since I have another filter, I am assuming that it will not do any harm for the sponge filters to sit without water flow 15 hours a day. Any thoughts on this?

 

[FishDin]

I think you are correct. The sponge is siting in the tank with water currents moving around it. Should be no problem.

 

[kallililly1973]

I don’t think it would be an issue as long as the sponge is staying wet in the tank which it obviously is. What size tanks? Are the sponge filters in the tanks in that room necessary?