tony

I currently have a 20 Gallon tank with 9 tetras, 3 cherry barbs, 2 cory cats, 5 zebra danios and a rainbow shark. I have a penguin bio-wheel 150 filter, and airtech airpump. The air pump is 4.8 watts and says that is is designed for a 30 gal. aquarium. Is this enough aeration for all the fish I have?

P.S. The airpump is powering a 12 by 1 inch strip of airstones

tony

One more thing i forgot, there are also 3 live plants in the tank

Dino

You should be fine.

armadillo

One sign that they need more oxygen is if they gulp at the surface a lot. This is more likely to happen in the morning, when the plants have stopped releasing oxygen overnight, instead releasing CO2. But if you dont' see that, it means you're OK.

tony

I haven't seen any fish gulping at the surface, except for my cory cats, but (correct me if I'm wrong) I think that the Cory cats are supposed to do that.

Butterfly

yep they do that, have you watched the excess o2 come out the other end? It really does
Carol

armadillo

Yeah, it's normal for corys. I love it when they do that darting to the surface thing. But your corys are just darting up and back down, right? They're not forever at the surface, gaping?

Carol, I'd loooove to see the famous cory fart. I haven't had the honour yet, though.

tony

Yeah, they go up and then right back down.

Barbrella

Sounds fine, but the rainbow shark is going to top out at around 6" and be way too big for that tank.

armadillo

Oh, then you're totally OK.

jsalemi

If they're like my pandas, they go up and down and up and down and up and across and down, and then two at the same time, then three, and then they split -- I call it the nightly panda ballet.

sunda

Hi Tony,

I see no problem with the airpump u r using...but the tank is overstocked...