Well, this isn't a really stabled tank at the moment. It is only used to house the inhabitants of my 20g. I am currently cycling my 20g again, so I'm using this 5.5g as a temporary house tank becuase it was the only tank that had cycled water. But yeah, I have 2 corydoras, 3 otocinclus, a female betta and 3 ghost shrimps in it right now. I will check my 20g water parameters again in a couple days and see if it's stabled for my fish.