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Re: eheim filters/CO2. sand substrate problems?


As previously reported, you will have no problems with diffusing CO2 by
using this filter as a reactor.

The Eheim 2217 is rated for use on a 135 gallon aquarium. Providing you are
not using any other filtration device, your turnover rate is one turnover
every 5.77 hours. This turnover rate will work fine for you. You cannot
simply divide the tank size into the filters rated flow to find the turnover
rate. There is a formula that must be used.

Tom Bates
Allentown, PA

> Date: Sat, 25 Dec 1999 08:33:59 -0800
> From: "Bev" <bevgreen at cygnus_uwa.edu.au>
> Subject: eheim filters/CO2.  sand substrate problems?
> Hi all,
> I purchased a 2217 - 1000LH old style canister filter in top condition to
> use on a 4x2x2 = 120 gallon tank = 400L. This filter will turn the water
> over 2 times an hour, a bit too little but I will probably add an internal
> power filter for circulation/mechanical filtration.
> My question is that I know people use Eheim filters successfuly for a CO2
> reacter (ie CO2 is bubbled into the intake and dissolves within the
> filtered water) so does this only work with the 'profesional' series or
> does it work with the old ones - ie no air locks etc...
> (OLD = green transparent cylinder with grey lid)
> Also I will be getting some white beach sand for a 65 G african cichlid
> tank. Does sand cause many problems? The ones I have noticed are/could be:
> 1)anaerobic substrate - even with frequent weekly cleaning?
> 2) particles are suspesnded in the water rather then being caught in
> gravel?
> 3) fish waste collects on the sands surface?
> Looking forward to some answers.
> Daniel Green.

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