Fluval Multi-Chamber Holding and Breeding Box, Medium

The media could not be loaded. So as you see in my video I have experience with the small, and now I own the large version of this breeder box. It works great. Some reviews say people had issues. As you see, it doesn't leak and the pegs didn't break off like some others said. The pegs add and remove leverage so that it can sit correctly. You want it to be aligned perpendicular with the rim of your tank or if anything SLIGHTLY angled downward INTO the tank. You do not want the bottom of the breeder box to be pushed out from the tank. I could see that as a reason why the pegs would break for some people. You don't want the bottom too far in. I could see that causing the box to leak from the front but I dont see how that could ruin your marriage. I have my pegs on number 4 but the glass and rim is thick on my 75 gallon. Front of the breeder box should be more or less parallel with the tank. Don't put your flow too high. I have a constant drip. Maybe 1 to 4 drops per second but it needs to be dripping into the box constantly. It gives a small stream from the slit and a constant drip into the aquarium. It doesn't make lots of noise. I haven't had issues with this method in 2 years. This combined with my egg incubator is invaluable when it comes to preserving numbers. The small version does not have a lock. I don't use the lock on the big one. I dont like the design of it. I didn't need instructions because I'm not incompetent but some people may need them.

It works great. I only had to do a small alteration by cutting up a net and putting it over the outflow so some of the smaller fry wouldn’t fall out. But other than that, it works great!!

The media could not be loaded. It came with no instructions, but it was pretty easy to figure out. The only thing I had trouble with trying to figure out is those two tabs that go underneath where it hooks onto the tank as seen in the photo I took in between the tank and the box underneath. Still don't fully understand the purpose of those two tabs. But it's whatever it may be. Right now it's on the back of a 29 gallon. It's a great box to breed fish in, put their eggs in, act as a holding tank, or even use as a specimen container if ur looking to sell fish or examine them! And if ur wondering what those two little rubber things are, they're the clips to hold the top down if u have any aquatic friends that like to jump or escape. I see a lot of people say they have gargling or sputtering issues with the set, but mine came with a cap the has another hole on the side and I just put it on there end of the intake tube on the inside and it's as silent as can be. At least for my ears. So if urs came with a clear cap that has a hole on the side of it, stick it in there and see what it does for urs. So for the lack of instructions for everything that come with it, i give it 4 out of 5. Otherwise if it had instructions to come with it, i give it 5 out of 5! Great box!!! Definitely recommend! Oh! The air pump I have that's running it is a 3W 2 outlet adjustable air pump for the stone and the intake. Works really good! Good flow! The 2 air flow control valves, the 2 check valves, and the stone with the suction cup all came with the air pump I ordered separately with this. The purple artificial plants I ordered separately as well. I figured it'd be good to put those in to help them feel safer and hopefully be able to see them better as they move around. Also provide more surface for bio film and beneficial bacteria to grow on. I would've put real plants in but hornwort tends to grow pretty fast and it's hard to see those little white babies swim around in them. Hah So I put a small dwarf water lettuce in there instead to see how it goes. But anyways, hopefully this review will help those who are thinking about getting one of these. In my personal opinion, don't hesitate to get this because it's so versatile and u can use it for so many things other than just breeding. It's a great thing to have in ur arsenal as a fish keeper/breeder and I think everybody should have them especially if they're just starting out in the hobby. Have a nice day!!

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!