Penn-Plax Penn Plax Aquarium Super Tank Divider

I have a smaller 5 gal aquarium I was planning to set up for two male bettas. I haven't got the bettas yet, they are due to arrive this Tuesday. But so I have a glo fish, 2 ghost shrimp, 2 algae eaters, 2 snails and a couple of aquatic plants. This product has been great at keeping firmly stationary in the center of my tank. I had to do some cutting to modify it to fit, but it was not difficult to do at all. I have a small gap at the top of one end of the divider, but so far it has been great at keeping the glo fish and the ghost shrimp on their prospective sides of the tank. The snails and algae eaters have been able to sneak back and forth to each side of the tank which I have no issues with. I have read some of the others reviews about using this for bettas, so I am a little leery how well my two bettas will do once they are let loose in this aquarium. I am hoping they will not be over stressed with being able to see through the divider. But just in case, tomorrow I am heading to purchase a 25 gal aquarium I had already planned to purchase. So if they get to stressed, I will just move them to the larger aquarium and use this or another like product to separate them.

It was supposed to keep my two most aggressive fish away from each other. Mind you I purchased in April. The other night we noticed that the screening was rotting and there was a hole in it. Tonight my Blue Peacock Cichlid went right through it and began fighting with the Green Terror. Not good. One of my fish will probably be dead in the morning because I don’t have a spare tank. I’m going to contact the company as well. I feel as though some type of compensation should be given . If I do have a dead fish in the morning, someone will be charged.

I bought this to separate my frogs from the goldfish I don't want them to eat. The picture on the box is misleading as there would be no way to install the sides and then slide the middle piece down. You have to unroll the middle plastic piece (with the holes) and attach the blue side pieces (which is not that easy). I didn't even use the top and bottom pieces. The divider I got was a bit wide for my 29 gallon and I could have cut it down and made it fit perfectly straight. I could have also taken more time to get the bottom nice and straight but I wedged it in and down in the gravel and it's doing the job of keeping the critters on separate sides of the tank. Since most tank frames are black, I wish this was in a black plastic to match my tank- I might even consider leaving it in permanently if it was black. The clips do interfere with the fit of my hood but just a little. Since I'm not planning to leave it in permanently, I think it's fine. Now I'm just waiting for my fantails to get too big to be frog food.

A couple problems with this divider. The side brackets/supports curve, and do not fit snuggly to the wall of the aquarium. This allows a door way on each side for fry of all ages to slip thru. Every morning I get up to see how many can be caught and moved back over as I'd like to keep them from being eaten. Another issue is overall height. We have a standard 55 gallon. We also fill the tank to its capacity for proper water flow, and to reduce splash noise. This gives 2 more doorways to even large fish to pass over and eat the fry.Height should be increased, it can always be trimmed.Side brackets/supports should be made of a medium firmness rubber like material, something that could give a decent squeegee effect and stay against the sidewalls with no gap.

None of my fish are getting along lol they’re all nipping each other’s fins and I had to do something quick. This is installed on my 55 gallon aquarium. I currently have two different dividers on. On the left side I have the penn plax divider and on the right side I’m using the top fin divider (from PetSmart.) I think the penn plax divider is sturdier and covers the sides better. Small fish like neon tetras May still pass through so be careful. Also if you don’t have gravel or a substrate don’t bother this divider is a bit short and you need some gravel to properly anchor the bottom. I’m very happy with my purchase :)

I was pretty disappointed with this product. Probably the lowest quality product I have bought for any of my 7 tanks. Although I did get it to work, kind of.The clips that hold it in place are metal, and moving them around can scratch the plastic frame of the aquarium. They also interfere with my glass canopy, preventing it from shutting tightly, and leaving a gap that will cause more evaporation of my tank water. Using multiple suction cups on the sides would be a way better design than employing these metal clips.Also, on the sides, the divider is just supposed to be jammed in with no suction cups or any way of ensuring a tight seal on either side. I secured mine as best I could with a pile of gravel on either side holding it in place, but I expect to lose some of my tiny black convict cichlid fry to big fish on the other side when they inevitably find gaps. I already had one small tiger barb wiggle through from the other side, and he faced an immediate beating from the protective father of the convict fry. Also, my banded leporinus jumped over the top, so you have to make sure divider is positioned high enough that it is above the water, or alternatively, that the canopy touches it when closed. Doable if you have a deep substrate layer in your 55 gallon, as there is just enough divider material to eliminate the risk of fish jumping over or sneaking under.Anyway, if you want a divider for breeding purposes, this isn't a great one. If you just want to separate one nasty, big fish from the rest of the fish in your tank, it may work ok. Still, I could envision a big fish eventually knocking it loose if they get emboldened to keep ramming into it, as the material is so flimsy.

it was easy to install and works great. I am using it to separate fish and shrimp habitats. all the little beasties seem happy.