Enough air for my tank?

[therehere3]

Hello everyone!
Do you believe this is enough air(oxygen agitating surface) for my tank?
The tank holds 50g but I currently only have 30g in right now.

My tank layout is basically two i20 wispers on each side of the tank.

 

[Yorg]

It looks fine to me. How heavily are you planning to stock the tank?