CanadaAmanda Posted November 24, 2020 Share Posted November 24, 2020 I've had aquariums for a long time, but never started down the nerm path until more recently - as such, I didn't know about anything other than HOB filters. I put an airstone in my 29gallon, love the bubbles, great agitation. BUT.... now that I'm reading up on sponge filters and the fear of power outage with HOB while out of town for a weekend has bene put into me (hasn't ever happened to me in over 15 years of keeping tanks, but bound to at some point) why would I run a bare airstone instead of a sponge filter (or some other internal type filter run on air)... I mean additional surface area for bacteria seems like it can never be a bad thing, anything that runs on air can be easily powered during an outage and if you're not home it comes back on seamlessly. The only down side I see is that my current airstone is in a cool rock decoration and looks like a little black smoker or something with the bubbles coming out, where as a sponge filter I'd want to tuck away a bit more out of sight... Thoughts? Link to comment Share on other sites More sharing options...
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