Cam inverts sustain a BB colony?

[Oscarr19]

My tank has been running for 2 months now with only a couple margarita snails, a medium sized turbo, 6 blue leg hermits, and a couple nassarius snails.

My tank is 0 across the board with the slightest amount of nitrate like it's barely readable. I'm looking to add a single firefish within the next few weeks. Should I expect a huge spike or should I be ok?

17 Gallon btw

 

[Sniperhank]

Inverts do sustain some with their waste, but not as much as a fish would. I don't see why it won't be good to go though.

 

[Oscarr19]

Ok cool thanks!