Fluval Multi-Chamber Holding and Breeding Box, Medium

Years ago, I had a fish give birth only to have the fry get IMMEDIATELEY eaten by its mother. I was so sad and disappointed. I new I had to get a "Breeder Box". I got a super cheap one that just sits inside the tank. I mainly used it to let the fry mature a little bit before getting moved back into the main tank, or help heal a fish that was getting bullied recover its strength before rejoining his friends. After many months of tryin to find out why some fish that I put in there died immediately. I came to the conclusion that the water flow in this box was so so poor that all of the waste was being stored in the box and there was not adequate oxygen getting into the box through the small slits on the sides.Then I found the Fluval Multi-Chamber holding and breeding box and holy cow, what a difference. It incredibly easy and intuitive to set up, and is absolutely the perfect size for almost any application. Even on relatively small tank like a 10 gal. Currently, I have a Molly with a fin injury in one compartment, and the other 2/3rds of the tank are housing her baby fry. The room that I keep one of my tanks in, which currently has the Fluval box on in, gets very cold at night, 60-61 degrees. I was worried that since it hangs off the front and is just plastic that the temp in the box would lower drastically. I am happy to report that the temperature did not budge from the main tank temp with no additional heaters or anything, i have a 50w and a 25 w heater in the tank, but I'm confident that you could be perfectly fine with just one 25 or 50W depending on the ambient temperature of the room. The only thing i would be mindful of, is trying to keep super small fry (I'm talking 1-2 days old) in the left portion of the tank. I had a single fry get pressed up against the grate the flows back into the tank. I don't know if he was sick or weak, or if the current got him, but in thousands of fry run through this box, I've only had a single loss. so my best practice, if you don't need the whole box, is to partition off the far right slot, put your fish in the left and put the drain with the bigger slats in the outflow spot on the right. That allows more water to flow through the box and greatly decreases build up of debris (if you're like me and have a heavy hand when it comes to feeding fry.The only problem with this box is that I don't have one for all of my tanks!

The media could not be loaded. I did a lot of research because I didn’t intend to breed a fish, just ended up with a livebearer ready to pop so I wanted one I could keep up for a while without a lot of maintenance and this box is incredible. Really quality plastic, super clear and fits perfectly. Hooks up to an air pump and pumps fresh water in while agitating the surface for oxygen. And there’s lots of nice extras: clips for the top, different size opening for the output and gates for separating the mom and babies. I love this and highly recommend. Video shows the intake a noise level.

This box works very well compared to other boxes I have tried. I ordered a second one. The only drawbacks are that you will need to leave your aquarium lid cracked (increasing evaporation), it sometimes drips onto the floor, and if you are using it for eggs and have snails in your aquarium they will often find their way into the box and consume your eggs. This is way better than the suction cup boxes in my opinion.

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!

No flaws and exactly what I needed

Ok, after my 2nd batch of Corydora, THIS is the way to do it. We had a thermostat on a heating pad, warming a small tank, taking up my cabinet space, and then we found this. It’s FAR superior to floating mesh tanks. Clan, easy to view and maintain. Just another all together banger product from Fluval, maker of the best aquarium filters