![diameter eheim 2260 canister diameter diameter eheim 2260 canister diameter](http://andysworld.org.uk/aquablog/bblog/pictures/ee97b2dcbef447f3a3b535f4dcb82e7a.jpg)
It turns out that this math is very inaccurate. This surface area was based on simple math calculations and give about 80 for pot scrubbers. The data from the biomedia master table for pot scrubbers is: surface area calculations for pot scrubbers Amazon has them listed under “ Assorted color round nylon fish scouring pads“ (24 pot scrubbers for $8). This makes shopping for this media a bit of a challenge. And there are several other varieties of pot scrubbers given the same names. Pot scrubbers go by several names, including mesh scrubbers, pot scrubbies, plastic scourers and scouring pads (one actual description was “ plastic pot round scrubber scouring pad plastic” LOL). It includes testing which proves this is true. If one is a nerd like the author one might be interested in this long boring article on why this is true. Extensive testing has shown it to be a very good media to put in an aquarium filter. On the other hand if the intake side is impeded and the output side maintains the same output flow, the pump will destroy itself in short order.Pot scrubbers have the best combination of biofiltration capability, ease of use and availability of any biomedia. If the output side of a pump is above the maximum head, the pump will run fine for a long time without any water coming out of the output side. He explained that flow should always be controlled from the output side, never from the intake side. Hge pums like those in electric power plants or other extremely high flow applications. Many years ago in a long defunct fish chat I was taught about pumps by a gent who spent his life working with the really big ones. If the return rate is higher, the filter will soon empty itself. The potential flow rate of the intake side of any filter must be at least as great as return flow rate for that filter. There is one other factor to bear in mind here. That weight increases with height, but also if the diameter of the return hose is widened. all the water inside the return hose until it starts to come out). Bear in mind that head height flow rates are a function of the total water weight being lifted (i.e. That is about a loss of 12% of capacity for each foot the head height is raised. Since at 12'1' is the max head, that would work out to 635 gph/12.083 ft., or about 52.2 gph for each foot the head is raised.
![diameter eheim 2260 canister diameter diameter eheim 2260 canister diameter](https://i.ytimg.com/vi/SQ8SuGhc4Cw/hqdefault.jpg)
the flow looks to be about 435 gph which is a drop of about 200 gph or 50 gph/foot.
![diameter eheim 2260 canister diameter diameter eheim 2260 canister diameter](https://productimages.hepsiburada.net/s/9/375/9122791981106.jpg)
The difficulty with this discussion is that not only does head height affect flow rate, but so does the hose length and the specific media used as well as if one uses a spraybar or another type of output.Īt a head height of 4 ft. On my 150 that distance is more like 47/48 inches. I tend to raise my canisters by about 12 inches which ends them up about 44 inches from the tank rim. However, if you look at head curves for pumps and filters whose manufacturer publishes them, you will see head height matters. I still cannot find a head curve for the Eheim canisters. For the Eheim 2215 that height appears to be 5'11". head and no water will come out of the return side. The difference is the canister is sealed and the sump is not.Īll pumps have head curves, the higher the water must be lifted, the slower it moves. A canister functions the same way as a sump does. Gravity feeds the input side as long as water is leaving because it is pumped back to the tank. It was kind of neat.Īs far as i know there is no suction per se. Also had huge oil sumps to test lube oil pumps. We had massive water tanks that we could heat to the boiling point and would custom build the piping arrangements as needed for the tests. ~25yrs ago I worked in the test lab for a pump manufacturer that made pumps for the Navy and commercial marine industry. AKA- short hose syndrome (all too familiar) I just made that up. I'd also not want the hoses so short that I don't have any options for canister placement. I'm really not sure why this would be a concern anyway given most of us run canisters so that we can keep them out of sight. You'd have to find the sweet spot based on your specific setup. If the suction side has to work harder to get water in, the output flow will decrease. Raising the canister in relation to the water level will also eventually have a negative effect on flow. Click to expand.There's no way to give an across the board number for that.