How many air lines should i have going into my 55 Gal tank?

It sounds as though you have plenty of aeration.

How much do you "need"?

None, if your filters create enough water movement. But more probably won't hurt.

How much is too much?

Again, it's a question of water movement. If there is so much turbulence that the fish have any difficulty swimming against the current, then you should cut back.

i have the same problems with my air stone putting out to much bubbles and water dripping at the top because of it. to awnser your question that air bar at the back should be enough air for your tank. too much air is when the top of the tank starts dripping because there is alot of air and water surface interaction. not enough would be u see the fish gasping for air all the time

To be honest that is genuinely no longer a ingredient. the common of the tyre, the expected or instantly ahead lifespan of the tyre, the safe practices and performance and the fee are the major issues we evaluate. it can make little experience to spend an more desirable $50 in preserving with tyre for a gas saving of $20 over the existence of the tyres - would not upload up. i might want to pay more desirable for a tyre that lasts longer and is quieter to force on. We were given 80000km from our very last set of tyres and they were purely $one hundred seventy tyres on a 4 wheel force.

it really does not matter. Air stones are for decoration only. The amount of bubbles you want is all up to you.

That is all you need. Sometimes your fish can get shocked. I say your ok with what you have.