5 gallon nano

[Dcolognesi]

I have a great little spot on my kitchen counter for a nano. But the only thing I want to put in there is a healthy group of duncan polyps and some LR and sand..
Wanting to use ONLY the bare minimum
Small light
Heater
Nano power heads

If I use my heads to agitate surface, and have LR would I essentially NEED any kind of mechanical filtration?? The polyps being the only thing in there?
Thanks

 

[revhtree]

No just a regular water change.

 

[Dcolognesi]

Thanks!!!