Diatom filter experiences? - The Planted Tank Forum
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post #1 of 21 (permalink) Old 01-08-2007, 05:36 AM Thread Starter
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Diatom filter experiences?

OK,

So I finally found a used Magnum 350 canister filter and micron catridge, spilit a box of DE powder with a fellow hobbyist, and am running it on my 10 gallon "pea-soup" tank.

How long does it take for a tank that small to clear up? Here are some pre-filter pics:









The Magnum 350 has been running for about 6 hours and it's still pretty darn green. I added a little more than 1/2 cup of DE powder since I thought it'd work faster.

Anyone have any opinions?

Thanks.
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post #2 of 21 (permalink) Old 01-08-2007, 06:27 AM
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There is usually a special procedure to 'charge' the micron cartridge with the D.E. powder to use it as a diatom filter. How did you apply the D.E. powder?
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post #3 of 21 (permalink) Old 01-08-2007, 06:33 AM Thread Starter
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Had a container of water then added the 1/2 cup of DE powder. Stuck the intake and outflow tubes into the container and ran the filter until the water turned clear. Then I just turned off the quick disconnects, moved the intake and outflow to my tank, then turned the quick disconnects back on.

It's clearing up, but much more slowly than others have reported...or maybe my tank just has a really bad case of green water? Or does the filter not work well since it's used? Too much DE powder?...etc.
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post #4 of 21 (permalink) Old 01-08-2007, 05:09 PM
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It should clear a ten gallon in about an hour unless some of the water is bypassing the media. I had the same problem when I was missing a gasket. You should have 3 total.
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post #5 of 21 (permalink) Old 01-09-2007, 02:43 AM Thread Starter
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Just cleaned it out. Seems like I had a *lot* of DE powder. Checked the filter. No tear. Just moved all the gaskets around and checked them. Started it up again with 1/4 cup of DE powder this time. We'll see what happens!

I have two gaskets on top of the micron catridge where the lid attaches, one underneath the cartridge, and one small one for the return tube to the outflow.
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post #6 of 21 (permalink) Old 01-09-2007, 03:30 AM
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Mine goes gasket, micron cartridge, gasket, black center tube thing, gasket, then top. Not sure if that is what you are talking about.
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post #7 of 21 (permalink) Old 01-09-2007, 05:57 AM Thread Starter
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In your Magnum 350?

From the bottom up, I have 2 gaskets, micron cartridge, gasket, and the black center tube thing is stuck to the top.
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post #8 of 21 (permalink) Old 01-09-2007, 06:02 AM
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i wouldn't EVER waste my money on one of these things again. UV sterilizers ALL THE WAY. just my 2 cents.

"Some of the worst things imaginable have been done with the best intentions." - Jurassic Park
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post #9 of 21 (permalink) Old 01-09-2007, 06:26 AM Thread Starter
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Yea. About to get a UV sterilizer and get some PVC tubing to make a "HOB"-DiabloCanine style one.

I figure I could use the Magnum to do some polishing now and then. Not working out so well.
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post #10 of 21 (permalink) Old 01-09-2007, 06:47 AM
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no, i don't think. lol. just a big mess and PITA. if you have a canister filter, i'd recommend just using some tubing and mounting that SOB in your stand. much easier. when you're ready to use, plug it up and go.


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post #11 of 21 (permalink) Old 01-09-2007, 08:35 AM Thread Starter
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Figure this might go better in the Equipment forum. If any mods see this, can you please move it?

I figure if the gaskets are leaking or something and the water is bypassing the micron cartridge, I'd get diatom powder leaking into the tank, but I don't...so I doubt it's a torn filter or leaky gasket...right?
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post #12 of 21 (permalink) Old 01-15-2007, 09:21 PM Thread Starter
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Man, I don't know what I did, but I took it all apart and re-assembled it.

CRYSTAL CLEAR.

I setup my 40 gal. tank yesterday and used the diatom filter on that too. Crystal clear after 4 hours. Wow.
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post #13 of 21 (permalink) Old 01-16-2007, 12:20 AM
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Nice aren't they--when it works I've been using a Vortex Freedom for a few years for spot cleaning or when I really dig around...never had GW (knock on wood)...for that you need to find the root cause rather than employing a temporary solution. These filters (like a UV) are a luxary...not a necessity.

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post #14 of 21 (permalink) Old 01-16-2007, 06:57 AM Thread Starter
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The problem was that I did a major re-planting and stirred up my substrate.
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post #15 of 21 (permalink) Old 01-16-2007, 01:13 PM
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Quote:
Originally Posted by epicfish View Post
The problem was that I did a major re-planting and stirred up my substrate.
Yea, I've done that. Now every major substrate disturbance is follwed by a 75% WC. That seems to have helped me.

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