90 gallon sufficent Filtration Question

  • We are currently upgrading MFK. thanks! -neo

cichlid1207

Gambusia
Mar 3, 2012
3
0
16
Los Angeles
Hi All, i'm sure this is probably a pretty common topic but couldnt find anything pertaining to the information i am seeking. I'm looking into sufficent filtration for a 90 gallon. originally i was going to just use my fluval 405 but was unsure if it was adequate so i started shopping around. I had narrowed it down to the Ehiem 2075(rated at 330 gph) or 2080(rated at 450 gph) but am wondering if the 2080 would be too much. I will be keeping oscars and bichirs so a filter that can keep up with the bioload will be important. i've been seeing a decent number of reviews regarding the ehiem 2075 and 2080 leaking right out of the box. Can anyone provide me with any feedback or give me reccomendations? right now i'm pretty much on the fence and not sure which direction to go, any help would be greatly appreciated.

Thanks!
 
I have not used either of these filters, but as for you mentioning you thought the 2080 might be too much - most MFKers will tell you that you cannot have too much filtration. So if those are the two choices go with the bigger one. Also, I don't know if you plan to use both the new ehiem and your fluval, but it is suggested to use two filters instead of just one because you will still have filtration if one fails.
 
Well the 2080 will be fine, you can't really go over your tank limit my friend has been running a 200 gal filter on his 55 gal for over a year and it's been doing great and I'm running the same filter on my 72 gal.. I think it should be fine


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What are the Ammonia and Nitrite levels in your tank? If they are 0 then your current filter is sufficient for your tank.

If the water is sufficiently clear to your liking then you have enough mechanical filtration.

Adding more filtration would just be a waste of money and electricity if what you have now is doing the job.

Although running a second filter, even a second 405, is not a bad idea as all filters will eventually fail. It is a bit of insurance to have a second filter in the case of the first one failing.
 
Thanks for the reply, pretty much the tank isnt set up yet. i previously had fluval 405 on a 75g that had small tang cichlids in it and it seemed to do a good job. i decided to change out my glass tank for an acrylic tank but the price difference between a 75g and 90g was only around $30 so i went bigger. Main reason i was looking at getting a bigger filter was i plan on keeping large cichlids and i wanted to flexibility of being able to use the same filter when i upgrade. i would have gone bigger but space restrictions atm held me back. However i believe an ehiem 2080 is out of the question now since i realized i only have around 21 inches of clearance in the stand under the tank .... unless i set it up next to the tank. I did check out some ac110's however i'd prefer not to use a hang on the back filter. maybe i will have to try the 2075's. Seems like a waste though since i should have about 450gph according to what ive mostly read on this site.
 
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