Anyone done a 20g long marine/ reef?

I have seen it before,but like you said very hard to keep unless your very expericened with marine

The setup I saw had a 40-50 gallon sump hidden underneath,not really a small setup per say,but they kept it hidden nicely


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Its only as hard as you make it and what specific animals you want to keep. Lots of people are doing nano tanks these days with great success. Evaporation can be an issue in a small tank so you will need to account for that by being sure to top off the tank daily (or sometimes twice a day based on the temperature and humidity in your house). Dosing for calcium, alkalinity and magnesium should be fairly non-existent as long as regular 10 to 20% water changes (weekly is usually best) are being done. Nutrient control should also be handled just fime with those water changes supplemented by a good skimmer. THis is where using a sump is best. More water to give you a little more buffer for evaporation changes and a place to use a good submersible skimmer. However, not having a sump should not prevent one from having a successful nano tank. Research what you want to keep and understand the limitations of your display tank/equipment and you'll be in good shape.

I've have a 20gal long reef, been running for over 3yrs. As long as you take your time getting tank cycled, live rock fully cured, don't even need extra filtration. Mine does fine with 2 hydor powerheads, and water changes. I hav a rimmed top, but use a mesh screen top, so hav to top off water frequently from evaporation. I was running a canister filter on it, but mainly for mechanical filtration, kept water lil more clear. so more filtration doesn't hurt, but for small nanos, your live rock is your main filtration.

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The smallest reef I had was a 14g bio cube but I built it specifically for an all rare Zoa Garden and the only inverts were the clean up crew and a pistol shrimp and the only fish were 2 yasha gobies. It was extremely easy and was doing amazingly until I had to sell it.

I actually started salt with a small desk top 7 gallon tank and then moved up to a 20 gallon high. Now the same inhabitants from those are in a 29 gallon set up and it's going strong!

Just do your research and build a game plan on your life stock. Don't over stock it and you'll do great!

Definitely no more than 2 clowns regardless of the species. And I would stick to percula and ocellaris as most others are going to be fairly aggressive and outgrow a 20L.