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what do you mean by 3/4 of the aquarium with bubbles .. are the bubbles just staying under the surface and sticking to everything or do you have a mega bubble wand thats just cranked up?
You want your fish to have somewhere they can swim around without being in a constant stream of bubbles. So long as they can do this, there's no reason why it could be any harm. Are we talking like a 'bubble-curtain', any pictures ?
IMO there are too many bubbles in the tank..... I think that some fish won't like it that way.
Also I noticed that the HOB filter looks to high, I think that this will create an extra current also.
Too much bubbles ! It's busy in there isn't it ?? Also if your heater is half out of water it could crack, so get some more water in soon. I would be looking at stopping the 'big bubbles' source and perhaps making the smaller sources a bit less fierce too. Your fish must think they are living by an underground volcano !!