- Reef Octopus NS80 Hang-on-Back Nano Skimmer
Great nano skimmer from Reef Octopus for use in sumps, nano tank overflows and display aquariums.
Item #: OCT-NS80
Well Stocked Tank - Rated up to 10 gallons
Medium Stocked Tank - Rated up to 15 gallons
Light Stocked Tank - Rated up to 25 gallons
- Bubble diffuser
- Air silencer
- Easily control water level with raiser pipe
- 1 year warranty on pump
- 1 year on skimmer body
Microbubbles By Stanley on 6/20/2018Stanley wouldn't recommend this product to a friendHad to turn off the unit due to excessive microbubbles. I had a homemade skimmer made out of a water bottle that I liked better.
Great skimmer By Cody on 3/3/2017Cody would recommend this product to a friendI currently have this skimmer running as the only equipment on a 14g Rubbermaid frag tank and so far it works well for the money. Yes the plastic feels cheap and somewhat flimsy and the pump only pushes about ~50gph and it puts out some air bubbles, but what do you expect for <$50? All in all its a pretty decent skimmer for the size and price. My favorite thing about this skimmer is that it's basically a miniaturized version of some of Reef Octopus' larger hob skimmers so if you're used to those operation and setup is basically the same.
The only complaints I have are first that the collection cup fits much more snugly than the rest of the fittings, so much so that you pull the skimmer apart trying to empty the cup. Conversely the flow control is too loose so bumping it the wrong way can throw off the water level. Basically you HAVE to use a skimmate locker so as not to disturb the unit itself, but a simple shot glass placed under the spout lets you dump the skimmate without ever having to touch the cup. The second issue is that the output spout is above water level for some reason, so I added a small cpvc elbow to the spout so it empties below water level. This reduces splashing and a lot of the micro bubbles.
Overall this is an adorable and functional budget skimmer for smaller tanks, and one of the few true minature skimmers out there.
Airbubbles By Mario on 12/17/2016Mario wouldn't recommend this product to a friendI find from my experience with product. Unit produces too many microbubbles. No matter how you dial it. And that it skims more on the wet side. You get what you pay for.
Good skimmer for nano tank By brittany on 4/18/2016brittany would recommend this product to a friendThis is the second one I have purchased. I have a 23g bow front. After sand and rocks, I hold about 18 gallons. The only reason I replaced it, was because I left reefing for a year and lost some parts. I could have ordered replacement parts, but after shipping cost over half of a new one.
Woorks well By Nick on 3/11/2016Nick would recommend this product to a friendWorks well, a little noisy but my tank isn't in the TV room so not a problem for me but may be for someone else
Fantastic By Mike on 2/1/2016Mike would recommend this product to a friendI needed something small and cheap for my quarantine tank. I ended up going with this and it's amazing, I've had several skimmers rated for 50-60 gallons and this thing puts them all to shame. You just have to be careful with it as it's made of cheap thin plastic, but that's to be expected with how much it costs. Overall this thing is great, great bang for your buck.
Great skimmer By Harsh on 3/27/2015Harsh would recommend this product to a friendSkimmer works great. Took one week to Break in good and now it's pulling out a lot of dark gunk
Works ok but... By ChuckD76 on 8/17/2014ChuckD76 would recommend this product to a friendThis is my first skimmer and I've been using it for a few weeks now.
As others have said , Reef Octopus should have just saved the trees and not even included instructions if they were going to be as useless as the ones included. A few YouTube videos later and some careful squinting at the box and I figured it out though.
One of the videos I watched was a general dialing in a skimmer video and from that I just set this one to where the top of the bubbles are just at where the collection cup attaches. By leaving it there the skimmer acts as a water level indicator for the tank and I just top off as needed.
Skimmate has been a nice dark green/brown wirh a couple good chunks and a funky smell so I'm happy. Also, I've seen a slight reversal of some STN on a Montipora digitata since installing the skimmer.
That being said, there is some bad:
I have this on a pico reef, ~5 gallons, and for an in tank installation, for a tank this small, this skimmer is larger than I'd like it to be.
Also, as others have noted, microbubbles are an issue so unless you can stick this in a sump or a HOB filter/refugium I'd seriously think about purchasing it. I did try a piece of filter floss as a bubble trap but over a short period of time the collection cup would flood so I gave up and just live with the bubbles for now.
And finally, this skimmer is loud. Save yourself the headache and get a pill bottle and some spare airline tubing to make a silencer (thanks again, YouTube).
Other than those few issues, this is turning into a nice little skimmer and I would definitly consider one if I had a sump to stick it in or was planning a custom AIO build and was making my own rear chamber.
OK for the money By Tom on 6/24/2014Tom would recommend this product to a friendI bought this skimmer for my QT. The instructions are vague but if you have a general understanding of how a skimmer works, you should be ok.
As for function: Maintaining water level is crucial if you want any type of consistency. The collection cup is very small so a skimate collection container should be considered. It will create micro bubbles so you may want to consider some type of bubble trap. But to solve all of these issues, I set the skimmer in hob refugium and once it broke in, besides emptying the collection container once a week. I didn't have any issues.
Overall terrible By Zak on 3/10/2014Zak wouldn't recommend this product to a friendSo i bought this for my IM tank and all i have had are problems. The air valve constantly clogs and some times air just stops flowing through i had a 100% better experience with an oceanic biocube skimmer; if you don't know about it, its the worlds tiniest skimmer powered by an air pump. Do Not get this product!
Great for a small Tank By Den on 1/24/2014Den would recommend this product to a friendI have this on my 10g I use as a frag tank. Started pulling skimmate almost immediately. Would have been 5 stars if it weren't for the directions that came with the unit. Pretty much useless. Had to find a you tube video to check how to set it up.
Good skimmer for small tank. By Geoff S. on 12/17/2013Geoff S. would recommend this product to a friendWithin just a few hours it was pulling dark smimmate from my tank. I am using it on a 36 gallon bowfront which is larger thsn the recommended max tank size but I couldn't pass up on the price of it. I have been running it for almost 2 weeks at this point. It was a little tough to setup as the instructions were extremely vague but I got it figured out. It seems a bit overly sensitive to the water height - I am using it as a hob on my display tank. The size is just right to not be overly obtrusive in the tank yet not too small to be ineffective.
I recently purchased one of these skimmers. The collection cup has an outlet to run tubing to an external collection container. There is nothing in the manual that states the tubing size though. What tubing size do you recommend for use with an external collection container?
The tubing required will be 1/4" ID (3/8" OD typically) Feel free to let us know if you have any further questions!
How far under the water does the skimmer need to be? Also, how high up should the bubbling be before reaching the collection cup? Currently I have the bubbling just below the collection cup, it isn't raising up the cone yet. The tank is fairly new and still clean so no protein has been removed yet.
I have a 10g 20in long 12.5in high 10in wide tank. Would this work for this tank?
This will be around 10" tall with cup and will work great on your tank. Feel free to let us know if you have any further questions!
I have a shallow 20 gallon tank, would this fit? It doesn't give measurements but the tank is 12" tall
The total height will be 11 and certainly will work well on a 12" tall tank.
Yes I have a shallow tank of 7" in height wondering if I could still hang this skimmer? How high is the pump? How tall is the whole skimmer? And if I can use it would it work properly since a lot of the skimmer mite be sticking out of the tank?
This skimmer would not work well as this would not work on a height of 7" height. If the tank is small enough under 25 gallons we would recommend passing on the protein skimmer and instead performing larger weekly water changes. Feel free to let us know if you have any further questions!
Im getting conflicting answers....can I hang this on the back of my aquarium outside of the water* like larger HOB units?
The bracket itself attaches to the back rim of the aquarium but the skimmer body itself must be situated inside of the tank.