i have just purchased a fluval roma 200ltr tank will the fluval 406 external filter be to powerful for it many thanks
1134494
306 will be enough for it. Bought 306 here before but exchanged mine to my friends eheim filter because of too much noise. If you can stand for rattling noise, I'd love to recommend you to purchase 306.
1134495
Yes, it should be just about perfect. I had the 306 on a 40 gallon you can control the speed and decrease the water flow or go monsoon style and clear up cloudy water quickly. You still should get a regular top side filter. Check out the fluval aquaclears :) I had the aquaclear 100 up to 90 gallons, but flow can also be decreased. It's worth the price difference
1134496
No the 407 is rated for 100 gallons so I don't think it's too powerful. It is very common for people to use a filter a size or two larger than their tank requires. You can also use a 306 instead. I have a 200 liter tank and I use the 306 and it's works great.
1890251
I am using the 406 on my 60 gallon tank. Prior to that I had a 55 gallon that I was using the 406 on. I like it better than the 306. Some may say is a little overkill but that's how I like it.
1858761
I've had several fluvals from 305,406, and fx6. The two smaller ones I've had for 5+ years and both still work great my fx6 is built even better then those two and I've had it for 10 months with no problems at all. The 406 was used for two years on a turtle tank worked great.
768677
I use this on a 40 gallon breeder for an RES. It might be a bit too strong for a 20 gallon tank depending on what lives in there however, I find you can decrease the flow rate by half-closing the intake and output valves. If you can't find a slightly less powerful filter, I'd say try it!
364168
The 204 parts are smaller the impeller /shaft and cover are totally different/way smaller/the 304,305,404 and 405.parts are the same,except the handles and outer parts and canisters,where you can clearly see a difference. Fluval the best filter out there.(I have four running quietly as we chat) Go get em Mike
309066
I am using that model on a 55 gallon along with a fluval fx5 under the tank which is supreme overkill but it works great. I like this filter because it is easy to remove and replace media and is better constructed than most and is quiet as well. It is worth a few extra bucks for the quality alone and it has been working great for the past months in my r artificial reef setup. I use two main filters on all my tanks but that is just me.
1823101
Its really a question of how big a tank you have this filter is more than adequate for a 20 gallon tank in fact it may be too powerful
364167
The 204 parts are smaller the impeller /shaft and cover are totally different/way smaller/the 304,305,404 and 405.parts are the same,except the handles and outer parts and canisters,where you can clearly see a difference.Fluval the best filter out there.(I have four running quietly as we chat)Go get em Mike
533364
I would go with 150 more filtration for your tank, I have regular 29 gallon tank and I have Marineland 200 filter works great. 2 month went by and water still clear and all water tests pass.
1709779
Mine went out in 2 months. Not good quality in the slightest. Replaced it and never looked back. Also a 20 gallon filter on a 25 gallon tank is probably too small if you fill it up all the way. You should always go bigger. But that's off topic. If it came with the setup then use it until it poops out and replace it. If you bought, return it. I can't speak for fluval but I know I hated the aqueon.
727198
No, it would not be overkill. The filter allows for a lot of water by-pass, so it has to make up for that inefficiency with turnover volume. In other words, one pass through the filter is not always enough to clean the water. You can always reduce the flow rate, should you need to. My response is based on the product that I reviewed, the C2. I currently use the C2 on a 20-gallon long. The C4 might create a strong current in the tank. Some fish like a strong current, some do not. It depends on the fish species that you want to keep. Anything from a C2 on up will clean your tank. If you want a strong current, pick a bigger model like the C3 or C4. No, it would not be overkill. The filter allows for a lot of water by-pass, so it has to make up for that inefficiency with turnover volume. In other words, one pass through the filter is not always enough to clean the water. You can always reduce the flow rate, should you need to. My response is based on the product that I reviewed, the C2. I currently use the C2 on a 20-gallon long. The C4 might create a strong current in the tank. Some fish like a strong current, some do not. It depends on the fish species that you want to keep. Anything from a C2 on up will clean your tank. If you want... » Read More No, it would not be overkill. The filter allows for a lot of water by-pass, so it has to make up for that inefficiency with turnover volume. In other words, one pass through the filter is not always enough to clean the water. You can always reduce the flow rate, should you need to. My response is based on the product that I reviewed, the C2. I currently use the C2 on a 20-gallon long. The C4 might create a strong current in the tank. Some fish like a strong current, some do not. It depends on the fish species that you want to keep. Anything from a C2 on up will clean your tank. If you want a strong current, pick a bigger model like the C3 or C4. « Show Less
1895118
Yes, it works pretty well with my Fluval Edge 6 gallon, the water is pumped up to the top of the filter screen, and runs down back into the tank. If I hold it at an angle, it can run down my hand/arm, or down onto the top of the tank, so just be aware of that, and it works fine once you get used to it and angle it only slightly. I improved the filtering a million times by using a 100 micron filter pad that I cut with scissors to fit into the screen chamber - it prevents the water from getting cloudy 100%! Suction is superb without the bottom extension on, it sucks up about 2 inches of gravel, raise the vacuum up a bit, and the gravel falls back down, then use it to smooth it back out. Highly recommended. Yes, it works pretty well with my Fluval Edge 6 gallon, the water is pumped up to the top of the filter screen, and runs down back into the tank. If I hold it at an angle, it can run down my hand/arm, or down onto the top of the tank, so just be aware of that, and it works fine once you get used to it and angle it only slightly. I improved the filtering a million times by using a 100 micron filter pad that I cut with scissors to fit into the screen chamber - it prevents the water from getting cloudy 100%! Suction is superb without the bottom extension on, it sucks up about 2 inches of... » Read More Yes, it works pretty well with my Fluval Edge 6 gallon, the water is pumped up to the top of the filter screen, and runs down back into the tank. If I hold it at an angle, it can run down my hand/arm, or down onto the top of the tank, so just be aware of that, and it works fine once you get used to it and angle it only slightly. I improved the filtering a million times by using a 100 micron filter pad that I cut with scissors to fit into the screen chamber - it prevents the water from getting cloudy 100%! Suction is superb without the bottom extension on, it sucks up about 2 inches of gravel, raise the vacuum up a bit, and the gravel falls back down, then use it to smooth it back out. Highly recommended. « Show Less
1588066
I have one mounted concealed from view in the filter/pump compartment of a Fluval Spec III (2.6 gal) and it works flawlessly. Should be fine in a 4 gallon. It's large, but it's flat.
1301770
You sholud check link:http://www.fluvalaquatics.com/ca/product/14002-c3-power-filter/
1046318
I use no filters on my mixed reef. They catch all the little bugs that are good for the tank and become food for the fish. I would suggest a skimmer with out any other filters. I used a back pack on my 40gal reef when I started and a fluval 301. The fluval would fill up with copepods, baby snails, littletube worms and limpets. I wanted the micro fauna to remain so I stoped using the fluval and just added a overhead for water movement.
309068
I believe this filter will do what you need it to do with ease. I have been astonished by how well this filter works. I think the recommendation for the 56 gallon aquarium is because you mentioned it was a column and the water cycling is a little harder to draw the water from the bottom. I think you will be fine with this Fluval C4.
1816238
It is rated for up to 160 gallon, but in actual use I would say probably a 90 gallon. It has a flow rating of 330 gallons per hour but that is with no media so in actual use the flow would be less. It really depends on how many fish and type of fish you are going to keep. I have this filter on a 90 gallon and keep African Cichlids. Normal wisdon says you need to cycle the tank 8 to 10 times per hour. So I run this filter and a 460 Fluval. You will have to decide how many times per hour you want to cycle your tank and how many inches of adult fish you will eventually have?