Fluval Multi-Chamber Holding and Breeding Box, Large – Up To 3 Separate Housing Compartments

This breeder box has been perfect for raising my celestial pearl danio fry. It was easy to assemble, and I really appreciate how simple it is to access the inside for both feeding and cleaning. I did make a small modification by adding a sponge to the return since the provided grates were a bit too large and could allow fry to slip through. With that adjustment, it works wonderfully. Overall, I highly recommend this breeder box for anyone raising fry.

So I've bred peacock gudgeons and hatched most of the eggs within this container. It was attached to its own little 5 gallon tank with a HOB with carbon and extra sponge for proper filtration, keeping nitrate and nitrite at 0 despite the several-times-a-day feedings. The box definitely has potential to turn your fry container into a fry washing machine, little guys get tumbled around from the flow. The little adjuster on the airline itself did nothing for me, so I had mine hooked up to the system of my rack that let me change airflow directly from the pump. Had to lower that a decent chunk, otherwise the water flow was simply too strong. Even with that, I put some aquarium sponge on a little skewer and placed it right under the water output to catch most of the impact. I also added a piece of sponge on the outflow, because the little grate it comes with is just too big. My little fry kept escaping. I eventually learned that my fry are even small enough to go into and through the damn sponge I put in there, so I had to use something finer (which clogged easier). I also added some floaters and java moss to help with both filtration and hiding space for my little buggers. Unless you have fry that's too big to go through the little grate you definitely will need modifications. But besides all that, it's a fantastic option for hatching eggs and raising fry. My little guys are by now big enough to swim in the 5g freely while growing a little more without risk of ending up in the HOB. Given how well this entire setup worked for me I'll be getting more in the future. I've yet to try it for egg scatterers along with the one item from I believe penplax for automatic egg-harvesting, but I'll get there. And for that I'll need another one! I definitely can recommend it. It kept all my fry in a small space meaning I could give them more accurate feedings, and hook it up to its own tank to have a big water volume for great parameters. Amazing!

I've been using the 0.5 gallon breeder box for a few months now and it has worked really well so far. I use it for drip acclimation, as a holding tank for new fish/shrimp, and as a breeding tank to raise fry. It is very convenient, efficient, and easy to set up. Many of the negative reviews mention the little gate piece allowing fry to escape into the main tank. This is easily remedied by adding a piece of sponge filter in front of the gate. It is a little bit on the noisy side, but I actually enjoy the sounds of bubbles and trickling water. Other than that, the only two issues I have is that the the male connection to the airline tubing can get clogged with bacteria/biofilm which reduces the flow. This can be fixed by simply cleaning it with a test tube brush. Flow is also reduced if the water level in the main tank is lower, so just keep that in mind. The other issue is that waste can accumilate on the bottom of the chamber and it is not efficiently removed. I say this because all of my cory catfish fry died presumably because of the excess bacteria buildup on the bottom of the chamber. However, I probably overfed with first bites and didn't do a good job of siphoning out the waste. Despite these potential drawbacks, I believe that this breeder box is the best on the market.

I love this little box for my pregnant shrimp! It easily fits onto my 75 gallon aquarium. I currently have 5 pregnant shrimp in here. They seem to have plenty of room, for now. I’m not how this will work or if I’ll be able to save babies. I’m certainly going to try. The box was super easy to set up. It only took a few minutes. I was worried because the directions said the aquarium water level had to be within 2” of the top. Mine is not. I have it lower than that. Thankfully, it works just fine. I get a steady stream of water pumping in and flowing out. I think this little box is genius! I’ll probably use it to house some plants or maybe other fish babies, in the future. Also, I wrapped a little quilt batting around the output to prevent anything from getting dumped back into the aquarium.

The Fluval Multi-Chamber Holding and Breeding Box (Medium) is an incredibly well-designed accessory for anyone who keeps fish, breeds them, or needs a safe space for fry or injured tank mates. The multiple compartments offer great flexibility — you can separate fry by size, isolate a stressed fish, or use it as a temporary acclimation area. One of the best features is the continuous water flow from the main aquarium, which keeps the environment stable and oxygen-rich without stressing the inhabitants. Setup is very simple, and the box attaches securely to the tank with no wobbling. The clear plastic allows easy monitoring, and the layout makes feeding and maintenance effortless. Overall, this breeding box is sturdy, thoughtfully designed, and extremely versatile. A must-have for breeders, hobbyists raising fry, or anyone who needs a reliable isolation space. Highly recommended! 🐟✨

I like these, I’ve bought 3 over the past 2 months. However this first one I bought, when trying to get the airline tube off it fully pulled, broke off, the part it was attached to. So now I can’t use that entire water flow mechanism for it. Really frustrating and worried it’s going to happen to the other two I bought after this

Works very well for acclimating new fish/corals. I plan to use it for feeding live brine shrimp to my tank inhabitants when I'm gone for multiple days

Came with one of dividers tab broke

I have tried different types of breeding boxes and I consider Fluval holding and breeding box the best among them. It has everything that you need for an aquarium hobbyist. The size is very convenient comparing to others while I wish if Fluval can make a bigger size also. This is a complete set and you won't regret buying it. I highly recommend it.

İçinden hortum ile bağlantı plastik çubuğu çıkmadı iade edildi.

Ademas de ser de buenísima calidad, no solo sirve como paridera, puedes darle un sinfín de usos como para aclimatar peces, atemperar el agua que introduces en el acuario etc. Necesitas un aireador para su funcionamiento aunque con un poco de ingenio puedes conectarle una pequeña bomba y actuará de igual manera que un filtro mochila. Lo volvería a comprar sin dudarlo.

Excellent, worked well but you need a separate air pump to work, as it circulates water into the small tank sitting outside of the main tank and then back into the main tank.

Ottimo servizio veloce ... Il prodotto è ottimo e finzionale grazie