Review on 🐠 Ultimate Penn-Plax Clear-Free Under Gravel Aquarium Filter for 20-29 Gallon Tanks – Fresh and Saltwater Safe! by Liyanny Llerena

Exactly as it should be. FYI, this comes with 2 carrying straps. This information was not in the description. Also, there is no information in the description that it comes with 2 Filt-a-Carb cartridges that fit in the top of the tubes. However, if you zoom in on the item, you can see this information on the packaging. And just a note, if you want more lift tubing, I recommend getting the Penn Plax brand. Because of the way they connect to the record, Lee's brand doesn't really work. I mean you can do some creative edits and probably make it work. But it would be much easier to buy the ones made for this system. And in the kit there are these little rectangular pieces with a hole in the middle. You may be wondering what they are for. You should connect 2 panels together. See photo. But to do that you need to break down the intermediate parts that don't perform very well, making it quite difficult. I recommend having a utility knife handy to cut them a little more. And finally, if you want 20 gallons instead of 29 gallons, the risers will be too long. You can cut one in half and these two pieces will do. I just used a small handsaw to cut mine. Although you can probably do it with a utility knife. Update: I didn't like the design of the lift tubes at first. You have these thin, stiff, straw-like straws that run down them, to which you attach an air hose at the top and an air stone with a small section of tubing at the bottom. In any case, I've ordered several headers with a zeolite cartridge, so I've used the ones that have an air hose that runs the full length of the riser to the aeroston. But I'm just starting to treat my fish and I know you need to remove the carbon, didn't realize zeolite is the same thing. So, thinking to play it safe, I took off the zeolite knees and put on the originals with a plastic straw. They were also too big for a 20m tank and I had to cut them in half, as did the riser. But I can tell you I think they will work. 1. It is much easier to pull out this straw and connect the air duct to it than the top of the zeolite cartridges. 2. A shorter air line length is used. About 7 or so inches in my case. But if you were using what the kit is intended for at 29, it would be about 15 inches. Per tube which means I save about 15 inches total on my 20 longs and you save on 29 gallons with 2 risers over 30 inches. That's a lot of pipes! And I know the tube is pretty cheap, but still I don't want to spend. 3. I was worried that the inside of those straw things would get dirty, like air ducts, and I wouldn't be able to clean them. As it turned out, for them you can buy a brush for cleaning straw with a relatively small diameter. That doesn't mean it won't hurt. But it's possible.