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Hi, I run 3off 2078's and a 2074 and yes the electronics are designed and calibrated to run as supplied.Before I put my reactors on dedicated circ pumps they ran on 2off the 2078's just fine. As a 2074 is just a small 2078 I cannot imagine a problem. If you are using the constant flow function...

Hi following on from Garuf, here is a link too a suitable Y piece,http://www.stores.ebay.co.uk/MSE-Performance but as Garuf picks up on you are introducing a slight resistance to something that must already be struggling if you have dead spots, and splitting it in to 2x50%. Sounds like you need...

Bob, just a thought on your circulation concerns, neither of the filters are really very big with the Fluval at 1300l stated and the Eheim at 500l accrding to there own web site. :thumbdown: If you get 50% of this then your having a good day :) , so thats approx 900l give or take. Then you need...

Hi Bjorn, I run 4off Eheim Pro3, 3off 2078 and one 2074 and they are all silent. My guess is you have a damaged impellor and or a broken ceramic impellor shaft or one of the two black caps that fit over the ends of the impellor shaft is missing. These are really quiet filters all of mine are in...

I think if you get some Eheim 12/16 tubing you will cover all the necessary sizes. If you heat it in a cup of boiling water before fitting it and use a relevant size jubilee clip you should manage to get it to clamp down on, or expand up over a good span of diameters. As it cools under the...

Work on approx 50% flow from the stated as a good rule of thumb. As far as filters are concerned I personally run 3off Eheim 2078's which have all been faultless. Remember as with most things in life you only get what you pay for and any failures can be very serious when it comes to leaks. If...

Hi Tom you are right, there are 2off ( I think this is the part no you need 7444390) spindle mounts. It sounds as if with one missing the impellor was not centralised in the motor hub and fouling. The improvised piece of tuning sounds like it will keep you going for now, regards Colin.

I dont know if that would be an easy one for people to gather the same info. We would all have to have the same media load, diameter and length of hose. The height above the filter and whatever was on the end of the hose would all have to be the same :? I believe the general rule of thumb is...

Hi Ross try this number UK Eheim Distributor Service Centre on 01284 755051 and see how you get on. I have spoken to them in the past and they were really helpfull. Dont forget to lube then seals as you fit them :thumbup: , you know what they say ' a little lube goes a long way' :clap: cheers...

Hi ACS for sure the correct way to get the best from your reactor ia a seperate pump. That way you will leave the filter to do its job and after its filled with media the reduced flow will not effect your reactor and therefor reaction. For sure stick with Eheim filters the reported faults are...

Tom I agree, but the saturated water is in contact 24/7 and must therfore degrodate the seals as we are all hell bent in getting as much Co2 in there as we can :lol: . It is also a fact that some people use there filters as Co2 reactors injecting directly in to the intake, a purpose filters were...

Hi I have noticed more and more on the site about people having problems with leaking filters :( Does anyone ever think about what stops the filter from leaking. THE SEALS. Does anyone ever replace or service them? We all use CO2 yes? We all use special CO2 tubing yes? What about the seals in...

I run a pair of Eheim 2078's and on a 3 weekly rotation replace the white pre-filter pad and 3 weeks on do a strip and clean of everything. So far with a high plant and stock load this has proved to be critical in sorting out a problem I had a while ago with anubius melt. It may look like a lot...

Could not agree more unfortunately, I had an EX2400 and ended up binning it! I would not have even sold it to bring the pain of how rubbish it was to anyone else. 5 parts replaced in 3 months and eventually because of the continued down time the stability of the eco system was in question so it...

Cover some of the inlet slots by filling them in and by reducing the inlet flow to the impellor you will reduce the outflow. Try something like Areldite glue epoxy and glue in small pieces of plastic. Dont add too many as, if you reduce the inlet water flow too much the impellor will cavitate...

My 2078's both had non return valves in the outlets to aid priming. I don't know if your Eheim has them but if so remove them as the cause a fair restriction in the outlet venturi. As long as after cleaning the filter you fully prime the filter, I use a small jug and after cleaning just back...

Morning I also have 2off externals and I use 2off Vortech ciculation pumps to give me a really good flow. What I found with one big Koralia is everything close, plants fish and substrate got whisked away and the tank eventually, as the flow from one fixed place set in became a washing machine...

Good luck and good point on the Misses!!!!! :wink: Remember the Great Escape way of getting rid of the dirt, the bags sown inside the trouser legs,good for getting substrate in as well ha ha regards Colin. :lol:

Binned, yes binned a 4 month old Tetratech 2400 and replaced it with a FX5 because the tech was not stop trouble. :x The FX5 was definetly better but in comparison to the 2off Eheim 2078's I now have there is in my opinion no comparison. The Eheims are for me so quiet 2off are less noisy than...

As suggested getting the circulation right is tricky, the layout of the tank and the position of wood and stones can play a big part, as well as the size and type of plants. When you feed the fish crush the food and drop it in the tank and monitor where it goes and how far it spreads. This will...

Go with something from the Eheim range after having several different makes, my pair of 2078 electronics are silent and mega quality in build. Buy the best and most powerful you can afford remebering the 10x turnover rule as a minimum or you will have to start buying more kit messing up the tank...

Couldn't agree more I just replaced a Tetratech 2400 with a pair of Eheim 2078's BLISS complete silence, variable flow, easy to clean and upkeep 2 smaller filters than one massive one. I certainly did not look forward to lifting the Tetra on to the worktop for cleaning but the 2078's are easily...

Hi guys I wonder if anyone who has one of these or just knows the answer can help. I have just binned at Tetratec 2400 and replaced it with a pair of 2078e's as I can't be doing with the noise and perpetual breakdowns! One of the functions of the 2078 is the 12hr bio function which gives 2off...

Sam, today I replaced my very loud and annoying 2400 with 2off Eheim professional 3e 2078 and am I glad! :D After 3off failures with the 2400, 2off which where the hose adaptors from the hose to the suction pipe cracked allowing air in and an 'o' ring failure due to distortion even although it...

Hi I have exactly the same setup and as you suggest the Hydor Koralia 2 seems to be a perfect fix. I have the filter outlet going along the back and boost it with the Koralia as it flows round the corner. If you drop in some fish food the circulation/flow is very obvious and importantly really...