so the 3 gal tank came with:
LED Light w/ Lid
Hang on back filter (A tiny little puny one) - Clogs very very very easily
then ofc the tank itself now I might get another one because this is a circular tank and it's kinda weird to see in
What it didn't come with was:
Adjustable Heater
Airpump
Airstone
now I had an extra heater from my big tank kit (Kinda just used the tank as of now because the aqueon quietflow 20 filter like the impeller won't stop clogging... like every week) and the original heater was nonadjustable (100W) and it heated to 77-78*F
as for the airpump I had an airpump from when I again started my tank I bought one with an airstone then I got a little house decor with a built in like wheel that runs off of air, etc my pump I had wasn't powerful enough for it so I bought a bigger one and it works great so to sub the missing heater and airpump I used what I had
I plan on getting an adjustable heater for the QT tank, but to sub for the missing airstone I didn't have I cut some very very small holes into some aquarium air tubing and made a small bubble wall out of it and it works great! I still have to get gravel & maybe a small decor since it's a very small tank
and I might just get a sponge filter because well it's $2 on amazon