Not sure how to upload and post a video so maybe I can explain it? My filter is an over the back filter. As the water comes out of the filter and into the tank it spews millions of tiny tiny bubbles along with it. My tank is virtually filled with these tiny bubbles! Has anyone ever heard or seen this before???

does the water of the tank meet the lip of the filter? What kind of filter is it? some have more of a sloped lip and some have a more vertical. this could cause the water to push alot of air down.

The filter on my 36g causes millions of tiny bubbles in the tank... it almost looks like there is debris floating around, but it's just bubbles. You can try adding a little more water to the tank and see if that helps at all. It's not a bubbler, it's just the way the outputted water is hitting the water's surface and being pushed down.

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20g Heavily Planted http://www.aquariumforum.com/gallery...00&ppuser=8981
36g Bow Front Heavily Planted http://www.aquariumforum.com/gallery...00&ppuser=8981

Yes, it's over the lip.

ya i have that same filter its a good one. just add the water and youll be good it shouldnt be bad at all

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Tank
125g african cichlids making it work
75g rimless Reef in progress

There's no room to add water, It's to the top...I tried taking some out and nothing, I'm going to have to try taking MORE out. Could it be a bad filter? I got it used with the tank.

That is odd that you are getting so much aeration even though the tank is full. you might try rinsing the filter media in used tank water and see if that helps.

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75 Gallon Planted

Check all of your mating points for your uptake and remove the adjustment piece to see if it goes away. Most people get it from water crashing into the tank. I keep my tanks 1/4" from the lip.

Your impeller might be cavitating as well. Is your filter rattling or sounding like the impeller is churning up air (it will sound "fizzy", sorta)? If so, you'll want to check your uptake tubing and remove the flow adjuster as was mentioned above, to make the impeller housing and uptake more air-tight to prevent the impeller from cavitating.

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Officially fishless until after the move....tune in later for details!

I said I have the same thing with my filter........... it's no issue.......just bubbles in the water, lol.

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20g Heavily Planted http://www.aquariumforum.com/gallery...00&ppuser=8981
36g Bow Front Heavily Planted http://www.aquariumforum.com/gallery...00&ppuser=8981

It's a big issue for me. the tank looks like it completely filled with lint

When I got it, he told me he used it for salt water aquarium. I cleaned it thoroughly. I've now tried different water levels, closing the adjustable midway vent, taking off the vent and extention, moving the filter to the other side of the tank, resetting the seat of the impeller, twisting the bio-wheels ( as Marineland says that it changes the way the water hits the wheel), and making sure it is level.
The only thing left I could think to do is to buy new bio-wheels and impeller. If it is not that though, I could have spend a little more and just bought a new one...Then again, maybe spending another 50.00 for a new filter won't fix it either? Maybe just a cheap filter???
Could the filter be just too big for my 46g bowfront tank? I'm starting to wonder i I really want to get into this hobby and am wanting to smash this tank right now... :(

Try changing the lip with plexiglass.

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I don't know what that means

Use a piece of plexiglass to change the angle/length of the lip. Hold the plexiglass with your hand to find a spot that slows/breaks up the flow. Then attach with a little silicone. I have it like this on my shrimp tank. I'll post a picture when I get home from work.

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Susan is right, virtually every hang on back filter does this. you should not worry and your filter is not broken, the fish like the extra O2 in the water anyway.

I wish everyone would stop saying it's normal... It is not! I wouldn't be posting it as a problem if it were not a problem.
That's like walking into someone's funeral and telling the family to stop moarning, that's normal, everybody dies. While true, they are not supposed to die at 20yrs old, right?

I'll have to try that when I get home. I also called Marineland and they said their filter don't fill tanks with micro bubbles. Well, after getting someone else on the line that seemed to know what they were talking about, they mentioned something I didn't think about... There may be a minute crack in the uptake tube where it's above water and it's sucking in air. I'll check that when I get home too.

Nothing changed, so I tried something different. Doing media moves, took out the bio-wheels and played with water levels. It worked...I put the bio-wheels back in and back to micro bubbles...Take the out...bubbles gone. Damaged Bio-Wheels??? for $36.00 I'm wondering if I should not bother getting them but to spend another 10-20 bucks and just buy a new filter...

There's also nothing wrong with just running the filter without the biowheel, is there? I don't own one so I can't say for sure.

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Officially fishless until after the move....tune in later for details!