Marineland Magnum 350
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.
Setup was very easy. The dual section valves on intake and output make disconnection and cleaning a breeze, and it is very quiet. When I eventually setup my big saltwater tank I'll be ready. Meanwhile I have one really heavy duty gravel vac!
Buyer beware! Magnum 350 isn't one of the better filters on the market. It might work great now... but long term, they're crap. They break easily, and that nice quiet thing you mentioned... wait! Parts can also be very hard to obtain, so I'd make sure that the lfs you purchased the filter at stocks plenty of the parts or is able to obtain them directly from Marineland.
Should you decide to run it full time on a saltwater tank... expect to stock a heavy supply of micron filters... they will clog quick enough, and there is no way to clean them effectively enough to reuse them.
Well, that is a dissapointment. I guess looks can be deceiving. I'm batting zero with filters. I thought I was getting a pretty good value for the price (~$140). What would you have recommended to do the fine polishing I needed?
yeah, actually im curious to see what yalls would recommend here. I was going to buy 2 mag 350s for my 110g tank until I read that from BB.
what are reasonable alternatives without spending a ton of cash?
oh and satwood, where do you live? on drsfostersmith.com the magnum 350s are only 80-90 bucks
I really don't understand what's going on here. I've got (2)Magnums that are over 20 years old and running like tops. Other than routine maintenance and worn parts replacement( o-rings and the like) I have NEVER had a problem. Parts are very easy to find both at my lfs's and online. Even my old Mags are quieter than my Eheims or Fluvals. Their customer support is first rate too, as I have had to trouble shoot a problem that turned out to be nothing more than "operator error".
As far as cleaning the micron filters, ANY micron filter will become loaded, that is their purpose. I backflush mine at regular intervals to help with longevity but expect to replace them at regular intervals. I do not run my micron filters all of the time. Mine last a year or more in most cases.
The best part of Magnums is the fact that you get a quality filter at a good price. I swear by them.
I've got a magnum 350 that's been running flawlessly for years! I really love the brand and have always recommended it. I'm surprised to hear this negative review.
On the other hand, I've always avoided micron filters, as I know how quickly they become clogged. I use the media basket (or whatever they call it) with Ehiem Substrat and the filter sleeve. I definitely don't change or rinse the sleeve as often as I should, and again, never any problems.
Micron filters definitely aren't something you want to run all the time, any brand's version will clog very quickly! Unless you need them for some special reason, it's just a waste of time and money. I'd recommend switching to the basket, sitting back, relaxing and doing very little maintenance. :D
So far my Magnum 350 has been running fine. I also have a HOB Aquaclear 30 running, and this is only a 20 gal tank so I think I'm getting plenty of filtration now. I have the water flow turned way down with the micron filter installed and so far it has not shown any reduction in flow rate.
I bought this filter because I needed to fix my green water problem and intend to setup a larger 70 gal tank soon so I figured I'd get a head start on it. Now that my water is crystal clear and the tank stabilized again I'll switch out the filter and used the regular media basket as you folks suggested.
I'll post here if I have any problems with the filter.
bettlebz: I'm in Massachusetts and I could have ordered it online but I had already waited a week for a miserable Diaton filter that didn't work, so I was getting frustrated. That's why I went to Petco instead and paid too much. I was more worried about the tank and the fish being treated well.
Diatom filters are definitely effective for treating green water. That filter will work great on your 70 gallon when you upgrade.
Just a note, another good way to get rid of green water is a UV sterilizer. On the other hand, you'll need to get rid of the root of the problem to keep it from coming back.
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.
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