Eheim 2026/2028 on 2.5 ft tank?

[Growe]

Hey, also like to poll some expert opinions on my plan. Have been eyeing these 2 filters 2026/2028 for quite some time because they are "professional" with self priming. The latter is the one main attraction to me. However, their flow rate is like over 1000l/hr. Is it too large for my humble 120 l tank? Do you think it will have the fish swimming sideway and uprootiall my plants (with that flowrate in a small tank).....

[cherietung]

good for oddballs even in a 2' tank. else, super overkill.

you can block the flow but risk long term damage to the filter.

btw, planted tank is 2x not 3x

[tawauboy]

it may be a bit overkill but there a a number of things you can do(if you are bent on getting 2026/202.
1) control flowrate by adjusting the output valves.
2) use spraybar to diffuse the flow.

do note that filter flowrate will slowdown due to muck and age. and 'extra' flowrate will help if you are using a co2 reactor.

[Growe]

Thanks for the opinions!.

As I have a self modifed external CO2 reactor that are connected to the output of my 2213 eheim at 1.5 - 2 bubbles/sec, I noticed that there are always residue gas inside the reactor, which I suspect that the flow rate is not enough to absorb all the CO2. Hence, the thought of the upgrade. I play very much on efficiency, so if 1.5 bubbles go in, it should be 1.5 bubbles dissolved. Dont know does it make sense???? Worth a try??

[geoffrey]

I use a 2028 for my 2.5ft. If ever I think of upgrading to a bigger tank, I won't have to get another.

Yes, those filters are an overkill. It will cause a tsunami in your 2.5ft BUT flowrate can be adjusted and I am doing fine with the valve throttled to a quarter of full flow. Other than the flowrate being the issue, nothing is a concern.

[tawauboy]

[quote:bf5a1f204f="Growe"]Thanks for the opinions!.

As I have a self modifed external CO2 reactor that are connected to the output of my 2213 eheim at 1.5 - 2 bubbles/sec, I noticed that there are always residue gas inside the reactor, which I suspect that the flow rate is not enough to absorb all the CO2. Hence, the thought of the upgrade. I play very much on efficiency, so if 1.5 bubbles go in, it should be 1.5 bubbles dissolved. Dont know does it make sense???? Worth a try??[/quote:bf5a1f204f]

you can try using a power head to drive your reactor.
a cheaper solution but takes up space in your tank.

anyway, there will be some residue gas, most likely from impurities.
but they will get dissolved, just at a much slower rate.

[vinz]

Errr... a power head to drive an external CO2 reactor? Too troublesome IMO... the extra plumbing.

The 2026 or 2028 which is the Pro II series, has a "combi-lever" to adjust flow rate.

For the older Pro series (2226, 2228 ), use the filter's output valve to adjust the flow.

Quoting Eheim website:

The flow of any EHEIM External Filter may be reduced without negative effect on the appliance. Please note: performance may only be reduced on the pressure side. Please note: For LIBERTY the reduction is on the suction side, for EHEIM professionel II via the combi-lever.

Personally, I'm finding the 3xwater volume per hour guideline a little wanting in the long run.

My 2 cents = yes, either of these 2 filters will do. If the output is too strong, you can either reduce the flow OR split the output to 2 ends of the tank and get better distribution of current and improved water circulation.