Is my tank getting enough oxygen

[Jackg]

I was wondering if my air pump is strong enough for my 16 gallon tank and if there is enough airflow. Thanks!

 

[kaphillips438]

If I'm correct I see a sponge filter and an air stone so yes they are getting plenty

 

[Delapool]

Looks sweet - it’s mainly that the bubbles create water flow at surface to re-oxygenate the water. The bubbles don’t do a lot themselves (from CO2 injection either very fine mist air stones or impellers to chop the bubbles into the water are ways to do it but for these setups it’s not needed imo).