Great product for all-in-one tanks, and nanos.
929363
I have been very happy with this filter media, I prefer it to carbon and phosphate remover. I was a big fan of seachem products until I tried this. It is especially good for all-in-ones and nano tanks where you don't have room for media reactors. A must try for any aquarist.
1075919
This came in real handy when I had to be away from the tank for a month.
Don't have to worry about having to ask people to top off your tank in a meticulous manner.
I have it setup on a nano 8gallon NUVO, Fits just fine, but I cant run it with my protein skimmer, its one or the other.
798245
Fluval has done it again. I bought this filter as a replacement and am quite impressed with the overall build quality. It came together easily and doesn't leak in the slightest. The interior is made up of several sections. The first is just before the mechanical filter which is a large coarse foam. There are then several trays stacked on top of eachother for biological media, carbon, ect. These all fit in nicely and are capable of holding an impressive amount of material if you want them to. The unit came with some bio material, but I went ahead and ordered a 500 bottle of matrix and added it in.

The fittings that attach to the tank fit nicely and stay in place. I haven't had any complaints about them. They are also easy to adjust vertically to add more or less aeration to the water. The quick release is a dream. This is the first filter I have owned with one and it makes changing anything so much easier. Just a matter if closing off the lever (which can also be used for limiting he amount of flow through the unit), and then opening the release mechanism. The pipes leading to the tank then come right off with almost zero mess and the filter can be carried away for maintenance.

All in all, a stellar product and nothing that I can cite as a negative.
320075
Works well and if hooked up to a temp controller, it cooled my nano tank within 1 hr to get it back to normal temp.
1725872
So far so good, purchased two filters, received them fast as always from Amazon, and added activated carbon I purchased at my local Fish store. Cut some poly fiber purchased at the LFS as well, and put all together just like the regular replacement filters. Took me some fiddling to get everything in and closed, but could be because I really packed the carbon in there, possibly too much and too tight. Even so everything is running fine, and my water remains as clear as always. I have a 55 gallon fresh water tank, with 4 Orandas about 4 inches each(not counting tails) along with two Otto Cats to eat algae. Filter wise I have the one Penguin 350 with the two biowheels and compartment space for 4 filters (which i do keep stocked) and I have a Fluval 405 Canister filter. I had too much flow for a while due to the Fluval's powerful output. My plants had a hard time as well as the little Otto Cats, but i recently purchased the Fluval Spray Bar kit, and it has really helped to disperse that heavy current. Now things are great. These filters will save me a great deal of money, I likely will reuse the poly with each cleaning, and just replace the carbon. This way i keep all the biological bacteria in the poly filter part and keep a good ecosystem going. I recommend these filter cartridges for anyone with the compatible biowheel models.
781853
I bought this product because some of the levels were off in my newly set up 16 gallon nano reef.  After a few days of use, everything buffered itself to within acceptable levels.  Been using it every day for several weeks.  Coral has grown and expanded, looks very healthy.  Even have 2 natually occuring frags already from frogspawn and Kenya Tree Coral.
417530
Works great.  I retrofitted it into my Red Sea Nano tank and got rid of their smaller drip container.  Very easy to assemble and hookup.
3974073
An excellent pump for the money, the Seio Taam p320 delivers excellent flow over a wide area to keep your fish and or corals happily blowing in the current. At 320 gph flow is non adjustable and the pump is easily diassembled for maintenance and cleaning. Perhaps one of the heaviest power cords on any pump out there, it may be a bit cumbersome and tends to redirect and move the pump until a good bend is achieved where it exits the aquarium. Magnetic mount works well on small aquariums but still seems a bit weak. Overall an excellant choice for the nano reefer wanting good flow on a small tank.
832251
This is my second filter of this brand.  These SUNSUN filters are the absolute best value available, and make "high-end" filter setups for your tank achievable on a small budget.  There is only one caveat to my recommendation - please read and understand:

The black plastic tubing that comes with these filters does a terrible job of sealing.  If your intake tube doesn't seal, it will suck a small amount of air, which will eventually form a larger bubble near the canister.  Once the bubble is big enough, it will break free and go into the pump, stalling the pump for a few seconds until it clears itself.  This is no cause for alarm, and the pump is functioning, although hearing the pump passing this air every minute or so gets annoying.

The fix is fairly easy - you must glue the tubes together.  There are two glues I recommend for this - Welder's cement (available on Amazon - it comes in a red tube), and Testor's model cement.  Both of these glues contain Toluene, so you must glue your tubes together in a well-ventilated area, but the Toluene is what makes this work as it actually melts the two plastic pieces together, making for an airtight seal.  Please do not be intimidated - this is much easier than it sounds.  Let your bonded pieces dry for a day and you're all set!

My two SUNSUN filters now have more than 2 years' constant run time on them and they are going strong and quiet.  These are in large aquatic turtle tanks so their ability to handle messy pets is proven.  The hose connection to the canister has a shutoff valve which makes removal and cleaning of the canister an easy, no-mess project.  The internal filter media trays are compatible with pre-cut foams and industry standard filter media packs.

In summary, with a little extra prep on your end, you can have a large-capacity canister filter that runs quietly and works great for less than half of what you'd pay in a pet store.  These filters are an excellent value.
3785445
It's a good little diffuser.  I have it in a nano tank about 4ish gallons.  I like it compared to the one I replaced it with because it doesn't change the proportions of size in the tank like a bigger one would.  I have nano fish and nano plants so why not a nano sized diffuser as well?  So far works great.  Easy to set up.  The suction cup is inside the black cardboard part of the packaging in case you're looking for it.
425754
Fantastic product, I got the water pump model because it had a much better flow rate. I used it on my puffer tank as a DIY filter, I filled it with Seachem's DeNitrate and Purigen along with Poly Filters to and left space available to separate small fish if need be. I still have plenty of room to add media if I want but I would and have recommended this product to friends.
2989201
Perfect for API Aquarium Test tubes as some other reviewer said. I love it. Great product.
2688118
Awesome product for removing ammonia during water changes. I usually use this as a supplement along with my regular water conditioner. It's been about 4 months since I've purchased this bottle, and I've only used up half of it using it on 4 tanks. A good value for ensuring pristine water conditions. Haven't lost a single fish using these products.
4605353
Have one of these in my 28gal nano-cube. Its doing a great job getting rid of the dead spots in the back of my reef. Was thinking about maybe getting a 2nd one, then hooking up my wave maker to it.
2276773
I love this supplement. I recommend it to others.

I have a 20g tank that houses a range of SPS, LPS, and softies, including Duncan Head's, Goniopora, Hammer Coral, Zoas, leathers, and more. Previously, I had larger tanks, but I haven't set them back up since a move. I have used this product for the last year or so and my tank is doing phenomenally (in conjunction with Reef Complete from the same company and Lugol's for my Xenia). There's not much more to say than thatthis thing gets the job done.

If you want a thriving underwater garden, it's a lot like an above-ground one: adding the right things helps. This is one of those things to add. I recommend it to others.
3261557
I own two of these, and like the description says, it works well for a tank up to 55 gallons. I have one of mine set for a 12 gallon tank - the lower top off limited amount - and one for a 55 gallon - the higher amount.

My only note is that as this is designed for a nano tank, it seems reasonable to assume there won't be a sump. In that case, I find this doesn't work amazingly well in a main tank. You have to be really careful with how you position your pumps such that there is very little wave action to force the float to go up and down. I had to really play with my pumps, a tunze 6025 and a jebao wp25 to make sure there was no pulsing action. Otherwise, up and down the float goes, on and off the pump goes, and your tank overflows, given the time.

It does work reliably and it is so well priced compared to other options out there. It deserves 5 stars - you should just understand it's limitations in a sumpless system.
1755531
Great product to use on your fish tank. Instantly gives you that GFCI for your critical components. Short on plug extension, but thats the point.