Finally decided to try dwarf puffers!

[FishManiac987]

Hey you can still use sand with a bio wheel. Just put the filter up a little higher and there is no problem. My bio wheel and sand have been working fine for the past two months, and my planets are thriving in the sand

 

[SilverDollar_03]

cool! do you need to put fertilizers in sand, if i just use pure sand substrate?