Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.

These are rock solid advices . The only thing I’ll add is that you can wait on dosing till your sps has grown significantly, just by doing weekly water changesI agree with the others about 20g vs 10g. I'm in the same apartment boat as you and went with a acro dominant 14g mixed reef. Your equipment list also looks very good. Nanos can either be the easiest tanks you'll ever have or the most difficult, depending on what you're trying to grow. If you're going the acro route, then I'd highly recommend a controller, ATO, heater, and doser. I left comments below for each piece of equipment..
ATO - Absolutely necessary IMO with SPS in a nano
heater - My recommendation (and what I do) is use an oversized heater, so anytime my water dips below 78 degrees, it heats back up within seconds. I maintain a 0.1 daily fluctuation this way.
doser - ALK is obviously extremely important in SPS land, but it's near impossible to keep acros and dose 2-part by hand, unless you're breaking up your daily dose into 4+ doses. Personally, I don't like anything higher than a 0.3dkh daily fluctuation and acros are extremely sensitive to ALK swings. You'd obviously be dosing much less 2-part than a larger system, so you'd want to either dose micro amounts or dilute the 2-part components and dose larger amounts. I use a Neptune DOS, which has the ability to dose as little as 0.1ml, so I personally do the micro dosing thing with 0.2ml doses every 2 hours. Mag I dose by hand twice a week, since it doesn't shift as quickly as the other two.
controller - This will be the most debated bit. You'll hear the argument that there's not as much to automate or monitor on such a small tank, but I actually lean in the opposite direction. Fluctuations happen very quickly with the smaller water volume, so it's very helpful to know when something's wrong immediately. I also heavily rely on my controller for redundancy/failsafes. For example, my ATO is only given power for 15 seconds every 30 minutes, so if my ATO malfunctions and is stuck on, it would literally take about 2 days for my tank to overflow. I have a similar failsafe with my oversized heater. I still use the temp controller on the heater to dictate when the tank needs to be heated, but my Apex temp probe acts as a backup and cuts off power if it hits a certain temperature. In this scenario, both would have to fail for my tank to get fried. Controller definitely isn't something that's an absolute necessity, but it's very helpful if you're going to run a system that's extremely sensitive to fluctuations.
Lastly, I just wanted to provide some additional info on my setup/routine. I don't use a skimmer, since the ones that would fit in my back chambers don't perform well enough IMO to justify the real estate they'd be taking up. Because of this, I do a 20% water change weekly. I also use Chemi-Pure Blue and dose the Prodibio Nano Reef Kit every 15 days.
A lot of folks attempt to keep acros in a nano, but not many have success because it's much more difficult to keep super sensitive specimens in systems with greater fluctuations than their larger counterparts. I realize most people will say what I'm suggesting is overkill for a nano, but an acro dominant version is a completely different ballgame than a typical nano reef. It absolutely can be done though. Good luck.
Dang, I forgot to mention the most important things , get a rodi system. I live in a tiny apartment and use ro buddie. Get instant ocean reef crystal saltLots of good advices here, I’ll add a few thing from my experience (a nano and two pico). Size won’t matter for coral as long as you are above 3G . It will have a hard limit on your fish choices though. Nano tanks are much easier and cheaper if you stick to few things , I’m coming to those points next
- for sps , you’ll need strong flow , strong light , absolutely stable chemistry and proper alk/ca
- my recommendation will be stick to 10g ( because you chose it already) .
- go with kessil a160. Aim for a light that will give you 5 watts per gallon , and run it under 3watt per gallon for longevity
- go bare bottom. You will not have issues with cyano, first year of the tank will not be that painful. That will also allow cranking the flow , even close to sand bed (no detritus )
- dontbgo for refugium, in small size they are not that effective . Go for aquamax hob 1.5 or tunze or even aquatic life 115 (I use it, it’s bad, but works ) skimmer. Use intank media basket, run chemipure blue and filter floss
- do 10% water change weekly for first 9 months and 15% every two weeks , introduce sps during that phase
- smart ato micro . Period.
- feed reef roid only , no chunky food. Keep fish population at minimal
- go with live rock. Don’t go for dry rock
This is very basic, simple and tested multiple time. It has some pain(water change), but it address all the fundamental 4 mentioned in the first point. Focus on flow, light , stability (ato, temp, water change) and ca/alk level
- you will be able to deal with anything mechanically, this include aiptasia, gha, bubble algae . Design your rockscape in a way that you can disassemble the whole thing in two or three distinct pieces.
These are some of my tanks, for example, that uses similar techniques (but backed by my own controller ) .
There are several other ways to get the same result , I bet those works as well, but this is the one I’m using and have seen most reproducibility
![]()
![]()
![]()
![]()
![]()
Lots of good advices here, I’ll add a few thing from my experience (a nano and two pico). Size won’t matter for coral as long as you are above 3G . It will have a hard limit on your fish choices though. Nano tanks are much easier and cheaper if you stick to few things , I’m coming to those points next
- for sps , you’ll need strong flow , strong light , absolutely stable chemistry and proper alk/ca
- my recommendation will be stick to 10g ( because you chose it already) .
- go with kessil a160. Aim for a light that will give you 5 watts per gallon , and run it under 3watt per gallon for longevity
- go bare bottom. You will not have issues with cyano, first year of the tank will not be that painful. That will also allow cranking the flow , even close to sand bed (no detritus )
- dontbgo for refugium, in small size they are not that effective . Go for aquamax hob 1.5 or tunze or even aquatic life 115 (I use it, it’s bad, but works ) skimmer. Use intank media basket, run chemipure blue and filter floss
- do 10% water change weekly for first 9 months and 15% every two weeks , introduce sps during that phase
- smart ato micro . Period.
- feed reef roid only , no chunky food. Keep fish population at minimal
- go with live rock. Don’t go for dry rock
This is very basic, simple and tested multiple time. It has some pain(water change), but it address all the fundamental 4 mentioned in the first point. Focus on flow, light , stability (ato, temp, water change) and ca/alk level
- you will be able to deal with anything mechanically, this include aiptasia, gha, bubble algae . Design your rockscape in a way that you can disassemble the whole thing in two or three distinct pieces.
These are some of my tanks, for example, that uses similar techniques (but backed by my own controller ) .
There are several other ways to get the same result , I bet those works as well, but this is the one I’m using and have seen most reproducibility
![]()
![]()
![]()
![]()
![]()
Rakie advocated for 2 AI Prime HDs, which would be 110w of LEDs.
it will take lot more space.I would just get an Apex/DOS and do automatic daily water changes. Even if you changed 10 gallons a week, IO salt purchased on sale would cost you less than $100/year. Brand new water every week. Can’t see how you could go wrong with that. You could probably skip a Skimmer with this arrangement. Jus a heater and circulation.
I run A360 over my 29G, which is 90W. AI, Kessil, Radion are all good choices. Kessil has better shimmer, and bit more pricy. But do stick to 3W/G rule.Wow Ranjib, those pictures are amazing and your sps are so colorful! How big is the tank in the photo? And also, why do you recommend live rock over dry rock? I dealt with a lot of pests from using live rock in the past and absolutely don't want to have to deal with that again. And don't worry, I will definitely be purchasing an RO/DI system.
It seems like people disagree a lot on the amount of lighting necessary. Rakie advocated for 2 AI Prime HDs, which would be 110w of LEDs. On the other hand, Ranjib is running a single A160 (only 40 watts) and having great success, which is hard to argue with. I could also go with an EcoTech Marine Radion XR15w.
Thanks for the advice Tiggs. I plan on having a very light bioload so I'm not too concerned about overfeeding. I will get a doser at one point, but I don't plan on buying one now because I'm still so far away from actually having SPS in the tank.
I'm planning to buy a lot of the hardware today to take advantage of the Black Friday deals, so I'll keep everyone posted!
Thats a good suggestion. Kessil A160 is pretty narrow, and if your tank is rectangular, two AI prime will give much better spread1) It's about SPREAD, not about the power. To cover 20" of tank you will need more than one AI PrimeHD
2) An AI PrimeHD only runs about 30-35 watts once spectrum is set, so you will top out at around 60 watts
Thos RO/DI system takes up lot of space (and money). RO/DI buddy is 60$ and you can fit the whole this below sink, and get 5G in 3 hours, every week.
, I know its awesome, but smart ATO micro is definitely better, its probably same reliable (if not more, since it has the auto-timeout) , but takes up lot less space.... probably 1/4th of this oneThos RO/DI system takes up lot of space (and money). RO/DI buddy is 60$ and you can fit the whole this below sink, and get 5G in 3 hours, every week.
I dont think that ATO is the best, I know its awesome, but smart ATO micro is definitely better, its probably same reliable (if not more, since it has the auto-timeout) , but takes up lot less space.... probably 1/4th of this one


