Equipment

The Minimal Role of Mechanical Filtration in Marine Aquariums

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  1. Brian says:

    I have a fluval 70 aqua clear for my 37 gal saltwater tank. That and marineland 400 powerhead are the only filtration in the tank. Haven’t had any real problems at all. Have 20 lb live rock in tank
    Clowns, chromis, gobies, blenny, chalk bass, choc chip starfish and sand sifting

    Would anyone recommend skimmer?
    Water tests fine, occasionally 8.0 ph.

  2. Jeff Kurtz says:

    Thanks for your input, Brian! You’ll definitely endear yourself to Chris with those chalk bass. They’re right up his Caribbean-fixated alley!

    We’re definitely big proponents of protein skimmer use. Add one to your system, and I think you’ll be very pleased with the effect it has on your water quality.

  3. Brian says:

    Yea im really thinking about the instant ocean 100 skimmer…. Mostly for rapid evaporation causes my HOB to be noisy, and the cost of filter and carbon a month wud be eliminated.

    My concern is water flow, as I know the fluval 70 does well with that. Your thoughts? Wud the instant ocean 100 create as much water flow? Im limited on outlets so another powerhead in my 37 wouldn’t be too practical.

    Love the chalk bass. Awesome looking. Neat swimmer. Was actually in process of buying lantern bass before I realized I cudnt put that in with chalk bass. Getting my dream Christmas wrasse in this week instead.

  4. Jeff Kurtz says:

    Hmm, neither Chris nor I have any experience with the Instant Ocean Seaclone 100 (I think that’s the model you’re referring to), but I suspect it’s discharge wouldn’t create the same level of water flow in your system as your HOB filter does.

    Have you considered adding a sump to your system and then using a good in-sump skimmer? In that case, the return line from your sump should move a decent amount of water for you and wouldn’t take up much room in the display.

  5. Brian says:

    No room for a sump. I was actually persuaded by 2 LFS not to do skimmer for my 37 gal… Mostly because it’s FOWLR. And told more maintenance than Hob.

  6. Paul Baldassano says:

    For mechanical filtration, I only use a diatom filter about twice a year. A diatom filter is a device that uses powder to trap very fine particles. After it is run for a few hours, it is backflushed and put away. I, unlike most people don’t feel detritus is a detriment to a marine tank (say that fast three times) Detritus is the end product of whatever we put into the tank and anything organic that is sloughed off the creatures in the tank such as coral and fish. Crustaceans, including copepod and amphipod shells and dead bacteria. Almost all of this can be used as food by the filter feeders in the tank and if there is any age to the system it should be filled with tiny tube worms which are filter feeders and live on this stuff. You don’t want to starve your feather dusters, do you?
    Pods, which are the staple food of many marine animals eat much of what detritus is composed of.
    A total lack of detritus is one reason new aquariums are not very healthy and are prone to all sorts of malady’s. The sea is full of detritus but you don’t see it accumulate to obscene levels as it eventually gets utilized by creatures on the low end of the food chain and the rest of it like shells, just disolve turning back into what it started out as. Sea water.
    If you use a mechanical filter, that detritus gets turned into nitrate by bacteria instead of being used for food by creatures that need it. I personally prefer linguini and clams and shy away from detritus, but who am I to judge?

  7. Chris Aldrich says:

    “Detritus is a detriment, detritus is a detriment, detritus is a detriment…”

    Phew.

  8. Oliver says:

    I only use filter floss in the first chamber of my sump witch I change every 2/3 weeks .

  9. Jeff Kurtz says:

    Thanks for sharing, Oliver!

  10. Noob says:

    Very confused……

    Just into the early stages of fish less cycling. I’ve got 2kg of Fijian lr in and about 18 kg of man made reef saver “live ” rock.

    I’m looking at a 200lph external with uv. Eventually also a skimmer and chaeto reactor. The tank is only 200 litres bug people tell me this is the way to go filtration wise.

    Help!!

  11. Noob says:

    Very confused……

    Just into the early stages of fish less cycling. I’ve got 2kg of Fijian lr in and about 18 kg of man made reef saver “live ” rock.

    I’m looking at a 2000lph external with uv. Eventually also a skimmer and chaeto reactor. The tank is only 200 litres bug people tell me this is the way to go filtration wise.

    Help!!

  12. Noob says:

    But**

    Also apologies for double post

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