Which filter? EHEIM 2215 or 2222 ...

[freshfish]

hello guys , i was thinking of getting either one of these models ...

now having 2 feet tank ... might be upgrading to 2.5 or 3 feet in future .

can anyone give me some advise on which one to get better ?

thanks

[Shadow]

2215 is enough for 2ft tank but in my opinion not strong enough for 3ft tank, especially when it needs to drive external CO2 reactor.

2215 is higher flowrate than 2222. In addition to that, I prefered clasic series, it is simple design and I expected to last longer.

[juggler]

Usually I just follow the manufacturer's specs. Consider other factors such as whether you have space in your cabinet as well as the power consumption!

From http://www.discoveraquatics.co.uk/filtration/2222.htm

Eheim 2222 External Filter Specification:
• for tank size up to 150l
• Pump output 500l/h
• Filter circulation 350l/h
• Delivery head 1,30 m Ws
• Filter volume 2,3l
• Power consumption 8 W
• Dimentiones approx. mm 290 x 178 x 178

From http://www.discoveraquatics.co.uk/filtration/2215.htm

Eheim 2215 External Filter Plus Specification:
• for tank size up to 350l
• Pump output 620l/h
• Filter circulation 510l/h
• Delivery head 1,80 m Ws
• Filter volume 4l
• Power consumption 15 W
• Dimentiones approx. mm 185 x 370

You can also consider getting a 2nd hand unit from forumers to suit your current needs. Then get a bigger capacity filter when you upgrade your setup. Who knows? Maybe you will have both a 2ft and 3ft setup in future!

[freshfish]

thanks guys !

juggler i saw your website ... very nice setup you got going on there

[Shadow]

by the way, what is "filter circulation"?

[johannes]

by the way, what is "filter circulation"?

the amount of water that flows through (circulated through) the filter media in a given time

[johannes]

another aspect in deciding which canister filter suitable for your tank is the filter volume.

filter volume = the volume of media a canister filter contain.

based on some source (i forgot), generally, your filter volume should be between 2-4% of your tank water volume (of course the more the better), as more filter volume is equivalent to more b.b.

e.g. 2 ft x 1 x 1.3 tank volume of water is around 60L (rounded up)

so if we take the middle which is 3%, the recommended filter volume is 1.8L

in this case both filters have met the recommended value: eheim 2222 has filter volume of 2.3 L and 2215 has filter volume of 4L

if possible get the higher filter volume so i would suggest 2215 for your 2 ft.

and if you were to upgrade, the 2215 is not that small either, it can still take load of your 3 ft for sometime before you get another filter to add on or replacing it with a bigger one.
so when you are about to buy a filter, you should not only look at the flow rate but also the filter volume....
normally this is how i calculate. hope this helps.......

johannes

[Shadow]

the amount of water that flows through (circulated through) the filter media in a given time

so in other word the output flow rate should depent on "Filter circulation" instead of "Pump output" right? because it is not possible to have water flow coming out from filter greater than the flow inside the filter.

[razornova]

i think he meant the amount of water inside the canister while the filter is working.

[johannes]

the amount of water that flows through the filter in an hour

[Shadow]

yes exactly, we should ignore the pump output spec and look at filter circulation instead because that is the actual water flow.

But honestly I never see filter circulation spec written in the box before or maybe I just miss it

[johannes]

yes exactly, we should ignore the pump output spec and look at filter circulation instead because that is the actual water flow.

But honestly I never see filter circulation spec written in the box before or maybe I just miss it

yes bro, some brand never states..

it can be used as a simple guide, thats' all