I don't have any, but again, I'm fairly new to this. btw-nice tank.

bubbles are always good to have. They help circulate and oxygenate the water. They can also be life saving if a filter goes down (especialy when you away and not know about it).

I agree with Kye. I have bubbles in all my tanks. not only do they circulate the water and look nice, but my fish love to play in them!

i have bubbles to keep the water moving for the filter to get the yuk.. i read they dont actually aerate the water as the bubbles go to the surface and pop so the air is actually going to the serface..

thats true kylie but can u see air in the water no its nots so much what u can see the bubbles doin its what u can't see u don't need them as such but u don't not need them in some tanks

Kylie they dont physically put air in the water, but the simple "motion" of the water adds oxygen to it. It is definately benefical to any tank, unless you have fish that lives in stagnant water.

I see dolphins... nice!