Good for a carbon fiber round bottom tank
345885
Good option if running your tank attached so your shoulder doesn't slip around the tank bottom. A few gaps around the edge but acceptable for my Ninja carbon fiber SL 68ci tank. I bet this would be perfectly snug on a 71/72 tank.

Was looking for a Planet Eclipse branded one in camp but Exalt is good too ;)
3738628
I search for a long time for a regulator designed for a paintball tank
to fit a tight space. Also, it's hard for me to find a CO2 gas store
to refill my 5 lb CO2 tank nearby. Using a paintball tank for my
planted tank is a better option for me. The needle valve is accurate
for the bubble count settings (1BPS). It works well so far.
3682813
This is my first purchase of carbon for our tank, so I'll update as we try other brands as this behemoth of a container gets used up.  Normally we've purchased the pre-made filters you just slide in, but we had the opportunity to use the filters you put together (<a data-hook="product-link-linked" class="a-link-normal" href="/Tetra-26164-Whisper-Bio-Bag-Cartridge-Unassembled-Large-12-Pack/dp/B001DCZUO0/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Tetra 26164 Whisper Bio-Bag Cartridge, Unassembled, Large, 12-Pack</a>) and as I mention in that review, you really need to buy more carbon and A\ammonia neutralizing crystals (<a data-hook="product-link-linked" class="a-link-normal" href="/Marineland-PA0382-White-Diamond-Ammonia-Neutralizing-Crystals-50-Ounce-1417-Gram/dp/B0002566XS/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Marineland PA0382 White Diamond Ammonia Neutralizing Crystals, 50-Ounce, 1417-Gram</a>) to make these filters shine.

My initial reaction to this carbon is it was dirty - took quite a bit of washing before it was ready to put in the tank.  Again, I'd say I'm an amateur here, but in comparison to the other filters we've used, I felt like I was washing forever.  I purchased based on the other reviewers that mentioned how clean this product is, and I have to disagree, at least with the container we received.  Once the filter is filled and clean, it seems to do a really nice job of filtering the water and removing contaminants.  Others have posted that this gets "used up" quickly, but we change our filter about ever 3 weeks and I would say it does a fine job of filtration in that time. Perhaps others ask more of the filter, and see a rapid decline, but in our case it seems to filter just as it should.

The last word: I would buy again, it seems to work as advertised, even if I think it was a bit "dirty" to begin with.  Even though this is an excellent value for the volume you receive, I'll probably try another brand on the next purchase so I have something to compare it to.
4172366
Seems to be well made and will probably do the job.  Like all tube-style inline filters, disassembly for filter cleaning will be slightly inconvenient since the line will need to be opened up, but the overall result is much more compact than a spin on type filter.

Consists of a couple machined plugs on the ends of an extruded tube, all anodized.  Filter screen is pleated and captured inside via the one removable plug on the input side, stamped "IN" for clarity.  The other plug may be epoxied in place.

Filter media only has as much surface area as the diameter of the tube which is maybe 1 inch, plus some amount of extra area due to the pleating.  Due to the limited filter area, tube-style filters probably should not be used with very dirty fuel, but that should not be a problem in first world countries.
2049175
Just got this tank today.  So far it seems like a really well made tank. I bought this for my soda stream.  I've got one of the models where the bottom plate pops out, and it fits this 24oz tank with room to spare.  The stock sodastream 14.5oz tank is good for 60 liters.  According to my calculations this should provide ~100 liters worth of co2.  You'll need an adapter which can be bought on amazon or on other sites for 15-20.  Then its just plug and play right into your existing soda stream.  Sports stores will fill these for $3-4 generally which is about 5x cheaper than trading out soda stream tanks!  Per the tank instructions, the tank should be tested every 5 years.  This product was provided at a discount in exchange for my honest review.
1737684
After reading reviews, I decided to give this a try to replace the charcoal in the filters for my cats' Pioneer Pet water fountain. It works well. I gently pull apart the filter, and then clean the filter including the fiber pieces first. Then put about 2 teaspoons of this charcoal in and reassemble. The only reason for 4 stars instead of 5 is that there is a fair amount of charcoal dust that I don't get with the OEM filter. But the cost is nothing by comparison!
4691801
I had been looking for a filter for a tank that would work like an aquaponics system. This is the only one on the market that will fit a 10 gallon.  I use the mechanical filter with the plants (they suggest one or the other-but I feel a tank needs the actual filtration). Mine is used as a second filter on a 10 gallon planted tank with 2 very small goldfish and 4 small white clouds. This tank is open so I don't know how it works with a hood.  I would give it 5 stars but it keeps trapping my little white clouds. I think they manage to swim behind the internal pump and then get sucked against the sponge in the back. Dont use this if you have small fish.  I am trying to figure out a way to avoid this by tying a foam sponge to the back to make the suction more diffuse for the little guys because I would like to keep using the filter. If you have a black background the rather large internal part does virtually disappear. my heavily planted tank looks extra pretty with plants coming out the back.  I guess you could just use a standard HOB filter and put lava rocks and plants in it in stead.. this is what I will do if I cant figure out a solution for my small fish.  Another plus: You can adjust it so the there is a waterfall effect if you need more aeration or so the water comes out lower near the surface of the water so you minimize water sounds.
3143626
This is a very good deal for decent activated carbon.  I'm not using it much, as my freshwater tank is tiny.
2053798
This tank works well.  Just remember that fuels weigh about 6-7 lbs/gal so you have about 75 lbs on your hands.  It will be heavy when full.  The nozzle is a bit cheezy but what I expected for the price.  Since it is gravity feed, a higher volume hose would be a big plus.
4896238
Works great, has a little charcoal on outside so you should rinse with RO before using in tank, but is easy to use and replace.
2470486
I got these for filaments such as carbon fiber & others that tend to wear out nozzles. After lots of reading & the last post about filing these a bit, I was able to get good builds on a monoprice select. All nozzle temps where increased by 20C to compensate for the difference in thermal transfer of stainless steel.

The calibration cube on the left is the stock nozzle.  The fill pattern is only 10% for the one on the right.
2106960
Using this as the first layer in my aquaclear filters. I just installed recently and my setup is this, foam, biomax. I'm not sold yet on how well this material will hold up on cleaning (hence the 4 stars), but for the price, it may not matter. It's a good buy, and it does what it was made to do, mechanical filtration. I will also be testing this as a diy filter for my house system...eventually... when the one i made from fluval floss falls apart... may be a while come to think of it.
TL;DR
Good first stage disposable material.
1786070
This is great cut to fit foam for my canister filters.  It's about an inch thick and a pretty fine density.  I save a ton of money by making my own filter media.  So far I've used it in Hydor, Cascade and Acuclear filters and it works great.  Just rinse it off in tank water every few months and it will last until it's just too gross to clean.
4911577
I put this in a small round tank for a beta.  It has kept the temperature perfectly. It does take up a little bit of room in such a small tank but that is to be expected.
1745970
I got this as a cheap tank for a betta I'm looking after temporarily as he looked so sad in his little 1 gallon bowl. It's a good size and the design is not terrible - it doesn't look as cheap as it actually is. The guideline of 1 pound of gravel per gallon works well as 3 pounds of gravel was perfect for about an inch depth.

The filter, aside from being poor quality, is actually dangerous if you have smaller fish. The betta I'm looking after is full grown, so he's not tiny, but a few days after transferring him to this tank I found him somehow trapped inside the filter. His fins are shredded and he's very shaken, so I'll have to work hard to make sure that he doesn't get fin rot or some other disease while he recovers. The filter is very, very cheap, even compared to other cheap filters. It's basically an open bucket - there is no top cover - and you just shove a little bag of carbon/whatever else is in the refills inside. The motor at the bottom sucks in water and it pushes it out through the top in an aesthetically pleasing waterfall. The open bucket design at the top makes it possible for a fish to accidentally jump in, which is what I think happened in my case. I didn't overfill the tank and keep at least an inch of space near the top. I recommend throwing this filter straight into the trash if you do get this tank. I have the Penn Plax Cascade 300 filter in my main betta tank, and I would recommend it 100% for a small tank that's over 3 gallons capacity. It's fully submersible, minimizing the disturbance of the water surface so they can make their bubble nests, and it has two stage filtration - mechanical through a sponge and with a carbon cartridge. It's fully enclosed so no accidents like this happen with it.

The lid is also flimsy. There's no hinge or connection to the tank - it just sits on top, so it would be easy to fumble it and dip it in the tank, distressing your fish. I don't use the light but I can't imagine having anything electric attached to such a flimsy piece of plastic. The light seems to just clip on so it's not the most secure thing either.

All in all, this is a cheap tank with cheap accessories.
4579843
Most experienced aquarists know that carbon isn't for regular use, just for absorbing the stuff you don't want, like fish meds. Don't plan on needing it for that but I used one sachet for three days to suck out whatever was throwing off the balance in my tank (not ph,nitrates,nitrates or ammonia, probably unused minerals/fertilizers) and my algae bloom gradually went away
936485
Looks good in the tank and tall enough to cover the back of the tank to hide the filter tubes etc.