how hard is it to keep a nano tank

You'll only want a couple fish...and they'll have to be small like gobies, clowns, and some wrasses.

That's the other issue with nano's, less choice of fish!
 
Updated 6g nano..

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Don't think anyone mentioned it yet so I'll suggest that temperature is a significant concern. I had a 10g with a lid and light just above the lid and I couldn't keep my temp below 86 and it would go as high as 88. I didn't have the ability to setup an ATO and evap was huge so hence the lid. The tank actually did OK for a while but some of my corals were stressed. Had an acan coloney die on me likely due to temp.
 
If you want to start with nano, I'd say to start with at least a 20-25 gallon. Any smaller would be too hard as you will probably make a good many mistakes, if anything like me. Personally, I now have a 29 gallon bc which isn't hard at all. Just keep up with water changes.


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I started with a 120 and I'm glad I did personally. It's nice to know I can go on vacation for a week with an ATO and auto-feeder and things will be 'ok' when I return. They all have risks unattended but the small tank can 'go-sideways' much faster. I just got back from a week of vacation. A little extra algae on the glass and substrate is all I had. That was yesterday. Today, a 15-ish gallon water change, gravel siphon, glass scrubbing, and some testing of my parameters are all that is on my agenda.

You can do it. You will just need to supervise it more closely. Good luck!!

Matt
 
Big is easier but more expensive. Check out the nano forum - the industry now caters to smaller tanks with great features like built in sumps with compartments that can be used as refugiums, house skimmers etc. Folks like live aquaria sell "nano packs" for corals and clean up crew.

LEDs compliment the artistic decor of the "nano cube".


With nanos, less is more. a pair of clowns, a few pieces of rock, a couple of corals and some use of empty space can be very dramatic.


That being said, do a nano because either that is what you really want or if you are limited in space and can only fit a nano. If you are starting small because you want to put your toe in the water and make the transformation to salt water, you'll quickly want to upgrade - and even though nanos are not as expensive as large tanks, they are not cheap as to make it economical to be considered them starter platforms.

I have a 29 gal - my first attempt at saltwater. It's a basic tank (not a cube or specialty nano). It's all I can fit in my living room. It's a vanilla reef tank, a bit over stocked. Being over stocked (not from design, but rather from lack of expertise) I run a 5 gal HOB cheato packed sump, biopellets and GFO reactor and a skimmer. While I love my tank and how it's developing. Had I been able to fit a larger tank in my living room, I'd be looking to upgrade as I type and seeking to recoup pennies on the thousand+ dollars selling all the nano hardware. I also, wonder, knowing what I know now, would I have opted for a more dramatic look of a minimalist nano cube. I don't know.



I do read more and more posts from "tweener" tank owners like myself - 30 - 90 gals give or take - tanks that some nanoist think are to big to be a nano, but traditionalist would advise against as being too small. We are proof that these tanks can indeed keep reef life successfully.
 
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