tag:blogger.com,1999:blog-8246150023544679038.post4727265309054711710..comments2017-02-26T19:25:05.381-08:00Comments on Complete Aquatics: Our review on Fluval FX6Complete Aquaticshttp://www.blogger.com/profile/08555236330734226708noreply@blogger.comBlogger8125tag:blogger.com,1999:blog-8246150023544679038.post-4579063827289694782017-02-26T19:25:05.381-08:002017-02-26T19:25:05.381-08:00I have just bought 2 fx6 cannisters & they bou...I have just bought 2 fx6 cannisters & they bought have problems with stopping & starting too evacuated the air why ? Done everything to instructions Anonymoushttps://www.blogger.com/profile/16450922279918659437noreply@blogger.comtag:blogger.com,1999:blog-8246150023544679038.post-69965012776180374582013-11-23T18:49:52.869-08:002013-11-23T18:49:52.869-08:00Glenn is also wrong. Glenn is also wrong. Anonymoushttps://www.blogger.com/profile/06807281396229833565noreply@blogger.comtag:blogger.com,1999:blog-8246150023544679038.post-8766453237095853902013-10-10T02:00:36.612-07:002013-10-10T02:00:36.612-07:00I am not an expert, pls excuse me if I am wrong.
H...I am not an expert, pls excuse me if I am wrong.<br />How do you explain the atmospheric pressure acting on the main tank that will transfer to the canister? jbctionghttps://www.blogger.com/profile/00459231450747768411noreply@blogger.comtag:blogger.com,1999:blog-8246150023544679038.post-41087715990067760822013-10-10T01:55:33.726-07:002013-10-10T01:55:33.726-07:00Though Canister may be closed loop, but the tank i...Though Canister may be closed loop, but the tank is open to atmospheric pressure else where does the oxygen for the fishes/plants come from?<br />May be I am wrong?jbctionghttps://www.blogger.com/profile/00459231450747768411noreply@blogger.comtag:blogger.com,1999:blog-8246150023544679038.post-16878956690015839412013-09-18T03:16:24.126-07:002013-09-18T03:16:24.126-07:00.... GT .... Andrey in indeed correct, I am an exp....... GT .... Andrey in indeed correct, I am an expert in hydraulics, I make my living from hydroelectric systems repair and maintenance, a system can have both open and closed sections, the canister filter in this case is indeed a closed section. many closed sections can exit to an open section (tank) but prior to that they are still closed systems and his comments regards the flow rates as a result of head pressure are correct as well. If you have 1m of head flowing into the canister, and 1m flowing out then tyhe head is effectively 0m and flow rate will be only affected by drag in the system.Anonymoushttps://www.blogger.com/profile/02509393837671071767noreply@blogger.comtag:blogger.com,1999:blog-8246150023544679038.post-48097491451379990592013-09-06T08:27:18.274-07:002013-09-06T08:27:18.274-07:00Great review!
I am only shocked by this ignorant c...Great review!<br />I am only shocked by this ignorant comment made by Andrey Tarasevich. Your Sir should read the review and shut up if you don't have a clue of what you're talking about! A canister filter is never a closed system! NEVER! You should get back to school and learn some physics! The only way this could be a closed system was if the tank was completly full of water and completly sealed with no air or in a vacuum like state wich in an aquarium is impossible to achieve because you have to have air exchanges. Your affirmations reveal a profund ignorance about fluid dynamics! You underestimated the effect of atmospheric pressure, you know the "weight of air above us" wich has a very important role in this matter!<br />So of course vertical heigh is important and a matter of decision when buyng a cannister filter and the more power the pump has the more height it can get the water back to the aquarium! That's how it works you dumb! It doesn't matter at all if the other end is submersed or not, it's almost exactly the same thing, it won't change the flow/power of the pump! Of course you cannot have this FX6 filter running 10 meters below an aquarium either you submerse the returning point or not. That is just a big LOL and anyone with more than one neurone can see that and you can test this on your own easily. The problem is not the drag on the hose, it's really the height. Go study some physics and then you can come back and make a constructive and relevant comment, not getting here to reveal a profound ignorance about the matter saying stuff any 16 yo kid can say otherwise and be right about it!GThttps://www.blogger.com/profile/03512379207911434659noreply@blogger.comtag:blogger.com,1999:blog-8246150023544679038.post-58758139968435677372013-05-22T13:51:24.035-07:002013-05-22T13:51:24.035-07:00A great review, which is unfortunately tainted by ...A great review, which is unfortunately tainted by the fact that the authors' impressions are sometimes driven by insufficient understanding of the physics behind canister filter operation.<br /><br />When both ends of the tubing are submerged, then your canister filter is an example of so called "closed system" (see link below). In closed systems the height difference between the filter and the pump does not create any load on the pump at all. In more technical terms, in a closed system the static portion of pump head is always zero. For this reason, the flow in such system is completely insensitive to the height difference between the canister and the tank.<br /><br />(See here for technical details and terminology: http://www.fluidh.com/calcpumphead.html)<br /><br />You should not expect any reduction in the flow with 2 meter height difference, 5 meter height difference or 10 meter height difference. In a closed system this simply does not matter at all. (It is true that longer hoses will create more drag, thus reducing the flow somewhat, but this a different story.)<br /><br />For this reason, your excitement about "vertical" performance of this filter's pump is completely misguided and irrelevant. For canister filters this is simply not a factor at all. Things like that matter for open systems, like wet-dry filters, where the pump does indeed have to work against the static head created by height difference. But not in canister filters.<br /><br />The reason filter manufacturers mention recommended maximum height difference (which, I agree, should not be exceeded) is that grater height always leads to greater pressure inside the canister. The canister seals have their limits. If you exceed these limits, the canister will begin to leak. This is the one and only reason each canister filter has max height rating. It is about seals and only about seals, not about the pump power.Andrey Tarasevichhttps://www.blogger.com/profile/13284736388091176095noreply@blogger.comtag:blogger.com,1999:blog-8246150023544679038.post-10530642729579898002013-05-22T12:19:47.875-07:002013-05-22T12:19:47.875-07:00This comment has been removed by the author.Andrey Tarasevichhttps://www.blogger.com/profile/13284736388091176095noreply@blogger.com