Setting up a mudskipper tank

[Mcgolg76]

Got a spare 20 long with stand super cheap and decided to make it a mudskipper tank. Done a lot of research but still have some questions

What should I use for substrate? Is pool filter sand ok or do I need a ph rising sand?

What do I use for heating and filtration? At most will only have about 5g of water

If I make the sand slope to a beach would the sand be too deep in places causing some bad bacteria growths



Does 4 indian skippers and two fiddler crabs sound like good stock?

Ty

 

[bettaowner]

I would only add two mudskippers and no fiddler crabs. Mudskippers are territorial and there's always a chance that the crabs may try to eat the fish.

 

[Mcgolg76]

The Indian mudskippers are much smaller and less territorial