I just got a 20 gal(US) tank
and I have a bunch of questions.
I want to put a zebra spiny eel and some sort of transparent fish in it, any ideas on what else to put in?
The tank came with free bacteria starter stuff, would it do any harm to put this in when I'm cycling the tank?
How would I go about cleaning the sand?
Would have to condition the first water I put in the tank in a separate bucket or could I just do it in the tank?
Those are all the questions I can think of now but I'll probably have more later.

I want to put a zebra spiny eel and some sort of transparent fish in it, any ideas on what else to put in?
The tank came with free bacteria starter stuff, would it do any harm to put this in when I'm cycling the tank?
How would I go about cleaning the sand?
Would have to condition the first water I put in the tank in a separate bucket or could I just do it in the tank?
Those are all the questions I can think of now but I'll probably have more later.
