Tetra Whisper PF10 is the smallest HOB I know of , I have one on my temp tank, uses those stupid inserts where I prefer to load my own media but if it has to be a HOB that's what I'd go with. If it wasn't a temp tank, I'd go with a UG.
this post was submitted on 30 Nov 2023
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Got it, thanks!
I have a little air pump I got at PetSmart and it's quieter than any HOB filter I've ever used.
That said, you might consider an internal filter. They work pretty well in small tanks and are silent because they're submerged (although if you wait too long to clean them they'll get noisy).
Hmm, I'm not familiar with them. Can you link me to an example? How do they work?
It has a small block of filter sponge at the bottom and it pulls water through that and out the port at the top. Has little suction cups to stick it to the glass, fully submerged. It's quieter than a HOB because there is no above the surface water trickling.
Damn, I wish my tank was bigger. I think this would be pretty large in a 4.3 gal though...
Still, goals for a bigger tank when I can (someday) have a house, haha.
I've mostly used them in 10-gallon tanks, it's true. I'm mostly replacing them with sponge filters, though, because these things needs to be cleaned more often than I like. They do a good job for what they are, though.
I might opt for one of those sometime, especially if this HOB is loud or just awful in general. Fingers crossed it works though, haha.