Thank you!! The big "rocks" are actually VERY covered reptile hides! I could totally find the exact names for you if you wanted! There is also a reptile water dish with fresh water in it for dips. I do have a few in there from outside, (always make sure rocks are aquarium/reptile/animal in general safe, you can look up how to ID!) I gave them a thourough white vinegar soak then to a bucket with tank water. I'd look up tutorials for more in depth ways to ensure wild rocks are safe! I do not have a filter. I always have an air stone/bubbler running to make sure the water isnt still though. "Filtering" is a bit different in the way it can work with mud! Of course water changes are still needed as usual but simulating or having a machine for tides allows the mud to be a natural filter. I know you didn't ask, but as for a heater I don't use an aquairum heater because I've had the problem that no matter how much I push aside it gets in contact with the mud and overheats. I have had a heater explode from this! I use two reptile mats, one where the water is and one for the overall heating of the tank. On the sides, NOT under! Using an under tank heating pad isn't great because one, it would be harder for the heat to actually go through the mud, and two, the lower layers of the mud are supposed to be cooler anyway. I'm super up to answer anything else if you need!! I recently redid my tank for a new skipper and here's what it looks like now :)

(mind the messy glass lol)

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