Prefilter or alternatives for eheim classics
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Old 03-19-2013, 09:58 PM   #1
Bl00dworm
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Prefilter or alternatives for eheim classics


Hi folks

I'm running an established 90 gallon low tech with 2x 2215 eheim classic canisters running default eheim media and some extra filter floss. These have done a great job of managing the bio load and maintaining parameters to date.

I recently added 100ml of purigen to one of these and have immediately noticed a marked difference in water clarity.

In the quest for the ultimate water clarity, what do others think is the best option for clearing the small particles that aren't picked up effectively through the canister?

I'm considering the eheim prefilter attachment for the classics or alternatively something like the aqua clear quick filter powerhead attachment.
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Old 03-19-2013, 11:04 PM   #2
creekbottom
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I find the fluval edge pre filter sponge fits really well on the ehiem intakes. It's black, small and cheap.
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Old 03-19-2013, 11:10 PM   #3
pastert33
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H4N sales ss per filters. I got one on my 2215 and have no complaints! PM him
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Old 03-19-2013, 11:10 PM   #4
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I would run a UV through one of your Eheims. The water will be even clearer, sometimes you have to look hard to see if there is water in the tank.
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Old 03-19-2013, 11:11 PM   #5
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Quote:
Originally Posted by houseofcards View Post
I would run a UV through one of your Eheims. The water will be even clearer, sometimes you have to look hard to see if there is water in the tank.
Yep, they do add a sparkle.
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Old 03-19-2013, 11:23 PM   #6
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For superior water clarity you can't do much better than what you're presently doing, bloodworm, i.e. using filter floss and Purigen, except to add a fine mesh pre-filter on your intake(s), as creekbottom has suggested.

But you also need to pay attention to proper maintenance of these items, i.e. cleansing/replacement/re-charging, for maximum efficiency.

That means re-charging the Purigen about every 3 weeks, when it just turns somewhat brown - don't leave it until it gets almost black.
And filter floss, double-layered (no more than that or it will tend to slow up your filter flow and posssibly clog it), should be tossed and replaced with new floss every second week.
The fluval Edge pre-filters do an excellent job, but here again, they need to be used properly - they should be rinsed well every 2nd or 3rd day, or they'll accumulate too much crud and lose effectiveness as well as potentially clogging up the filter. (This takes but a minute).

One final note: those 3 items will also be well assisted in purifying, clarifying, and polishing, by the use of a UV sterilizer, and reasonably good water flow throughout the tank, using a circulation pump if need be.
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Old 03-20-2013, 11:12 PM   #7
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Default Prefilter or alternatives for eheim classics

Thanks everyone, I'll go with the fluval edge prefilter as a starting point and see how much of a difference that makes.

Cheers
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