Depending on how much water you have...Penn-Plax makes the "Small World" filter that is for less than 2 gallons of water.
If you have something larger, Whisper makes a Internal 2-5 gal
, or I think now it is 2-10 gallon. I have for my 5 gal
betta tank, and the flow rate is adjustable.
If not, many places sell low-level water specific filters...made for just a few inches. Check your lfs
, or online for turtle or reptile filters, instead of aquarium filters.
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