Nano Hang On Back Protein Skimmer for Saltwater Aquariums Bullet-1, Up to 30 Gallon Filtration, Hang On External, Adjustable, Ultra Quiet Pump, Compact Design

Excellent product! Best HOB skimmer for under 40 gallon tank

Omg...I have to say, I don't have good relationships with skimmers! They hate me and good lord, I hate them! They literally explode, flood and nuke my tanks. I was on the verge of giving up. But....I researched one last time and came across this Bullet 1. Problem was, I could not find this model, only 2 and 3, it was sold out everywhere. But luckily I found this seller and I received it today. It is literally plug-in and go. No adjustments, nukes, floods or explosions! Thank you so much. 🐠

Awesome little skimmer once it gets going does its job and super quiet

great quality, easy setup, not alot of micro bubbles running dry (setup recently). only complaint is not instructions included (had to find online). using in IM 20g long

I'm relatively impressed by how this skimmer performed. While it lacks some of the adjustability that in tank or in sump skimmers have, it makes up for that in overall footprint and small size.Setup was super difficult, however. The skimmer did not come with any instructions in the box or any link to access them. If you look hard enough, you can find the pdf for the manual on Amazon, but it should not be this hard to find a simple instruction booklet. That's the only reason this gets only 3 stars.Once set up, this is a good skimmer. It's pretty quiet once it's up and running, and it skims pretty well once broken in. The skim is a bit more dry than I'd like even when adjusted to the driest setting, but it at least still takes a long time to fill up.For the price, this is the best nano skimmer I've used. It looks great, runs well, and is super quiet. If not for the lack of instructions, I would definitely give this more stars.

Good Value from AquareadyAquaready has become my go-to for quality products at reasonable prices, and this nano skimmer does a decent job, especially for smaller tanks. I tested it on my 20-gallon office tank alongside my Bubble Magus QQ Nano Skimmer, and while the Bubble Magus performed better overall, the Aquaready held its own once it was fully cycled.Works Perfectly on a 15-Gallon TankOn a smaller 15-gallon tank, this skimmer worked just right. After letting it build up a biofilm, which helps the bubbles and proteins rise effectively, it really hit its stride. It’s ultra-quiet and compact, making it a solid option for tanks up to around 30 gallons.Final ThoughtsIf you’re looking for a reliable skimmer for smaller tanks, this is a solid choice—especially at this price. Still, for my 20-gallon Innovative Marine AIO, I’d stick with the Bubble Magus. This one, though, will do the job in smaller setups without breaking the bank.

I was looking for a hang on skimmer when I came across this one. My tank is 45 gallons so I was hesitant but decided to still give it a try since my space is limited. Not only did it fit perfectly, but actually did a great job. It’s built solid, is very quiet, and is a great price for the quality you get. I am overall impressed with this and would recommend it if you are looking for a hang on back skimmer.

Really loving this nano skimmer! It's really easy to set up and use, and so far it's doing a great job of keeping the water clean on my 15 gallon mini reef. Keep in mind if you're adding a skimmer to a new setup, you may not see much foam produced since there may not have been enough time to build up dissolved organic waste. I'm super happy that it doesn't release micro bubbles back into the tank—that can be a real problem with hang-on skimmers. It's pretty quiet, so it won't disturb you or your fish! So far it's been easy to clean and maintain. Compared to similar brands I've seen, this seems to be a great value for the price. A protein skimmer is, in my opinion, a must-have for any saltwater aquarium owner and this seems to be a good one! Highly recommend.