Mud

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Smadav

Feeder Fish
MFK Member
Feb 19, 2026
5
2
1
54
New York
just wondering, have anyone of you guys seen mud as a substrate in a tank before? is tht even possible? i cant imagine how long it would take to settle it down. but i bet it would look cool.
 
"Mud" is a vague term. Technically speaking, wet sand is "mud". But I understand that's not what you mean.

In calm water, sand falls out of suspension in seconds, silts in minutes and clays in days.
But in a tank with decent filtration, we aren't working with calm water. So it'll be constantly brought back into suspension.

I do have two tanks with 2-3" of soil (organic contaminated sandy silt) with 2" of sand (pool filter sand) on top of it. They're planted tanks. It's proven to be more of a pain than it's worth, in my opinion. If I ever do this again, I'll put egg crate on top of the soil before adding the sand.
 
I'd be willing to bet money that many, if not all of the unique habitats we are attempting to replicate in our natural aquariums have substrates unlike anything we typically utilize in the hobby. I’d guess gents like duanes duanes would be able to describe what he regularly runs into while collecting. As an avid fisherman I can comment as to local rivers, lakes, and creeks and mud would be a great description in many places.
 
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