10-19-2013, 04:04 PM
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Using The Marineland Magnum 350 As A Diatomaceous Earth Filter
[quote=satwood;118092]I just want to share with everyone that after my bad experience with a diatom filter I bought a Marinelaand Magnum 350 canister filter and it seems to work great. I'm using the micron filter cartridge with the outer sleeve of blue foam so basically it's a two stage mechanical filter. It took about 24 hours for the micron filter cartridge to "clog up" just enough to trap the suspended algae particles in my water but once it did, it sucked the green out of the water in about 2 hours. My 20 gallon tank is now clear and clean. I haven't decided if I want to run it full time but even with all the green captured in the filter element the flow is still excellent.
As the owner of Vortex diatom filters (D-1 & XL) I can understand your concerns, given that they are
quirky to use. There's nothing like using one of these filters for the first time, only to have it spew
diatom powder all over your aquarium. Had that happen the first time I used my D-1 decades ago.
However, in spite of their quirkiness, they are perhaps the best high speed mechanical filters for aquarium use ever manufactured.
I also use a few Marineland filters strictly for maintenance. One is the HOT 250, which is very convenient, given how you can hang it on the side of your tank, and the other is the Magnum 350.
I like both of these filters for maintaining my planted aquaria, since I can use them with their micron cartridges alone, or add diatom powder to these filters to really polish the water in my aquariums.
Recently, I decided to use an old Aquaclear 50 hob filter that I purchased when I got back into this hobby several years ago, for micron filtering my planted aquaria.
The Aquaclear 50 is setup with 4 stage mechanical filtration including: a Fluval pre-filter on its intake tube, the mechanical sponge filter pad that comes with the AC 50, and two micron pads sitting atop
the sponge filter pad. The top pad is only 0.5 microns in size, which works quite well, since it's
half the size of the diatomaceous earth used in Vortex diatom filters. The pad underneath it is about
What I like most about the AC 50 as a micron filter setup, is its diminutive size and thus portability.
It's also nice to be able to find a use for an old aquarium filter that you replaced long ago.
I would also suggest investing in a uv sterilizer, since they do a superb job of keeping an aquarium's water crystal clear.
They can be had very inexpensively from companies like AquaTop, which has several lines of uv sterilizers; including a line of power filter/uv sterilizer combinations. These filters run from about
$50 to $60, and in this fishkeeper's opinion, are worth every penny.