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  1. #1
    Senior Member
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    Cannister Filter.

    I'm using a Ehiem Cannister filter with all the goodies inside. Should I be replacing all the bio stuff with simply foam inserts.

    When I first started this tank 3 months ago the guy at the LFS recommened the filter. Being a long time freshwater guy it made sense to have one although I've heard that what applies to fresh, doesn't apply to salt.

    I replace the foam/floss/carbon media every month and leave the bio rocks in?

    Word on the street is that a cannister filter is more less a nitrate factory??

    I have a FOWL, 30 lbs of live rock, 2 power headsand a Prizm wannabe skimmer.

  2. #2
    Senior Member orion's Avatar
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    best bet is to dump the bio media and use the filter with carbon only changed out monthly or as needed
    if your skimmer is operating well its all you should need. IMO
    The cannister filters are good for water polishing.
    some of the others may chime in here with more experiance

  3. #3
    Senior Member ReefSalt's Avatar
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    Ehiem`s are GREAT filters for Freshwater use only.

    Canisters are practicle when you need to remove specific organics or even reduce your phosphates.
    I would keep it empty or use it with floss and carbon or Resins when you want to polish your water then I would remove it or the media 24 hrs later.
    HTH

    ReefSalt

    Before you buy anything......Read and Research .
    _________________________

    Setup:
    265 gl SPS Reef. AquaScape Marco Rock 150lbs ( Upgrading to a 300gl Deep Dimension)
    Ecotech Radion Pro x 4 & Ecotech ReefLink
    Decante 75g
    Pompe de Remonte PCX55
    Reef Octopus SRO-5000SSS
    Reacteur Sulphur H&S Pour Nitrate
    2x Phosban 550

    Frag Tank:
    Perfect0 45 cube sur le system central
    Totoka LR 50lb
    Radion Gen2
    Vortech MP10W

  4. #4
    Senior Member aquamann's Avatar
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    Feb 2004
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    so i went out and spent $300 on a xp3 for nothing?
    crap:crap:. why is it best to leave the ceramic bio rings out?
    why not leave the carbon in all the time?

  5. #5
    Senior Member Conan's Avatar
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    I have a fluval (almost the same)
    1 - The ceramic bio rings are just too effective and produce way to much nitrates. (I don't have any)
    2 - I ran carbon for some time. I stopped when I found out that it is only active for a very short span (couple of days). Also, it acts much like the bio ceramic rings in that it produce huge trates. I'm not having any problem without carbon. If ever I need to add some, one can simply add it straight in the tank or in a sump.
    3 - floss or foam will remove suspended debris from the tank. In fact, some of that is actually food for your corals. So it aint a good idea to keep that either.
    4 - I've only put phosphate remover (witch works great!!!) and crushed coral for extra bio filtration.
    5 - The problem is opening the damned thing. Everytime you open it, you upset the fragile equelibrium of the system itself, witch you don't want to be doing every month.
    6 - In all, a canister filter sucks and I use it only until I get my 110G tank, at wich point, I'll auction it off!! :yay: IJO
    Do or do not. There is no "try" - Jedi Master Yoda

  6. #6
    Senior Member aquamann's Avatar
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    im very vexed:wtf:....i gotta go :coffe2:

  7. #7
    Senior Member ReefSalt's Avatar
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    Well Conan summed it up well,Just to add Carbon having different grades and the majority sold with filter contains phosphates,also it has a short life in the tank, once it sucks out the toxins/impurities from the water colum it is known to leach them back into the tank.Thats why I only use resins and recharge them myself so I can use it for a day or two then remove it, store it in the sollution and reuse it when needed.
    HTH

    ReefSalt

    Before you buy anything......Read and Research .
    _________________________

    Setup:
    265 gl SPS Reef. AquaScape Marco Rock 150lbs ( Upgrading to a 300gl Deep Dimension)
    Ecotech Radion Pro x 4 & Ecotech ReefLink
    Decante 75g
    Pompe de Remonte PCX55
    Reef Octopus SRO-5000SSS
    Reacteur Sulphur H&S Pour Nitrate
    2x Phosban 550

    Frag Tank:
    Perfect0 45 cube sur le system central
    Totoka LR 50lb
    Radion Gen2
    Vortech MP10W

  8. #8
    Senior Member ReefSalt's Avatar
    Join Date
    Nov 2003
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    1,450
    Remember its not that Canisters are bad filters, but they are not recommended for marine setups because they are Nitrate factory`s.In freshwater I would always use one though.
    HTH

    ReefSalt

    Before you buy anything......Read and Research .
    _________________________

    Setup:
    265 gl SPS Reef. AquaScape Marco Rock 150lbs ( Upgrading to a 300gl Deep Dimension)
    Ecotech Radion Pro x 4 & Ecotech ReefLink
    Decante 75g
    Pompe de Remonte PCX55
    Reef Octopus SRO-5000SSS
    Reacteur Sulphur H&S Pour Nitrate
    2x Phosban 550

    Frag Tank:
    Perfect0 45 cube sur le system central
    Totoka LR 50lb
    Radion Gen2
    Vortech MP10W

  9. #9
    Senior Member Conan's Avatar
    Join Date
    Jan 2004
    Posts
    583
    Well said Robin. In fact, I didn't know carbon had phosphates in it.
    I know how you feel Aquadude. When I decided to go Salt, I walked proudly into big al's (the only place I knew) and walked out with a s---t load of stuff I didn't need including that canister crap.
    For the same price, you can get a good skimmer made by Harley and it much better for your tank. Can you beleive they didn't even sell me a skimmer???
    Argh... I get so mad when I think back..... :coolmad: :coolmad: :grr: :grr:
    Do or do not. There is no "try" - Jedi Master Yoda

  10. #10
    Senior Member ReefSalt's Avatar
    Join Date
    Nov 2003
    Posts
    1,450
    Most Carbon have phosphates and those that dont are glad to make sure they place it on there packaging as Phosphate free.

    Yeah I think we all made that mistake of buying a canister well live n learn:
    HTH

    ReefSalt

    Before you buy anything......Read and Research .
    _________________________

    Setup:
    265 gl SPS Reef. AquaScape Marco Rock 150lbs ( Upgrading to a 300gl Deep Dimension)
    Ecotech Radion Pro x 4 & Ecotech ReefLink
    Decante 75g
    Pompe de Remonte PCX55
    Reef Octopus SRO-5000SSS
    Reacteur Sulphur H&S Pour Nitrate
    2x Phosban 550

    Frag Tank:
    Perfect0 45 cube sur le system central
    Totoka LR 50lb
    Radion Gen2
    Vortech MP10W

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