20 gall, long or standard?

[reignman40]

Interested mainly in keeping Danios and possible a couple ornamental fish, Otos, Cories, that type of thing. Wondering with the Danios is it better to get a 20 gallon long or standard size?

Also with the long would it limit/change my options greatly regarding tank mates?

Thanks,
Curtis

 

[Rushdude]

The longer tank would be best for danios as they would appreciate the extra swimming room.

 

[yohkos]

Good question. I really don't know, but I love the 20L. I keep an extremely planted tank with neons, platties, mollies and cories. If I were to get a 20 high, I would probably go ahead with the 29 gallon but otherwise like I said the 20 long is a great tank for me and my fish and plants do great in it.

Kim :dance2:

 

[OrionGirl]

The long will be much better. Not only does it provide for more swimming distance, but it also has much more surface area, allowing for better gas exchange.

 

[Roland]

Aye, the long tank would look good with danios, particularly if you have a strong current.

 

[reignman40]

I already have a Penguin bio-wheel HOB filter rated for a 30 gallon tank. Is that good or should I get a second one?

 

[sumthin fishy]

A 30 gal filter will be more than sufficient for a 20 gal tank. Especially if your not doing the "HOw many of the biggest fish can I squeeze into this tiny little tank?" thing.

 

[igeak691]

You'd definately rather overfilter than underfilter a tank. A bio-filter rated for a 30 gallon tank is still fine, as long as the current doesn't bother the fish you are going to put in it.

 

[Kasakato]

Longer tanks are better because fish need room to swim. And a 30g filter on a 20g tank should be ok. There's no such thing as over-filtering unless you are making a whirlpool. But there is such thing as under-filtering.