Nano tank with Sump

Discussion in 'Nano Tank advice' started by ScottK, 23 May 2011.

  1. ScottK

    ScottK

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    Hi All,

    I have have been running my 90L nano for a while with a HOB, small skimmer and a canister filter. I have been really struggling with algae growth in the tank and after reading these forums realized that it is most likely the canister filter causing this.

    I had a previous 60L tank which i decided to use as a sump. The sump has been built with a pretty simple design, intake that feeds my skimmer, small bubble trap, refugium/DSB and return.

    Now for the questions.

    1. I used 20mm PVC piping for the siphon overflow, will this provide enough flow for the volume of water I have?

    2. Should the HOB which has coarse filter foam, purigen, lava rock and some ceramic noodles sit in the sump or should I leave it on the display tank?
     
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  3. dallasg

    dallasg Moderator MASA Contributor

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    hi,
    you can put it on the sump, or tank, but easy to hide on sump
    your lava rock might be the cause of the algae
     
  4. Evo R

    Evo R

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    :welcometomasa2:

    There are a lot of things that can cause the algae ect.
    First off we need pics.
    Then we can see what type of algae it is, and better help you.
    Then, how long has your tank been running?
    What live stock is in your tank?
    How regularly do you do water changes?
    What lights do you use?(this can also affect algae growth)
    The ceramic noodles are no good.
    That lava rock are no good.

    But with pics and patience we here will help you to make your tank a nice and enjoyable.

    Please ask as much questions as you want.
    And when Tobes (one of the modarators) welcomes you, look at his signature there you will find invaluble info for new guys on starting marine tanks ect.
     
  5. ScottK

    ScottK Thread Starter

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    I will take some pic's tonight, the algae is gone for now as i cleaned the tank this weekend. From what I could gather it looked like red slime algae.

    The tank has been running for around 6 months, for the last 2 months all that was in the tank was a hermit crab and a blue lobster. I added in a clown, humbug and carpet anemone. The carpet anemone unfortunately did not look good from the second i put it in my tank.

    I have been cleaning and doing a 20-25% water change on a weekly basis.

    I am running T5's, 3 x 24w 10000k and 1 x 24w blue actinic.

    I'll remove the ceramic noodles and lava rock tonight, anything I should replace them with or should I let the LR in my display tank and DSB in the sump do that work?

    Where can I get some macro algae from and anything else to seed the refugium? I asked for some algae at my local shop and they tried to sell me some dry stuff in a box.
     
  6. Evo R

    Evo R

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  7. ScottK

    ScottK Thread Starter

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    Thanks for the advice.

    I googled Cyano Algae and it looks the same as what I have.

    The flow in my tank was pretty good before I introduced the sump with the HOB, drip bar from the canister, powerhead and a wave maker providing flow. Most of that has now been moved to the sump with the wavemaker and powerhead staying in the main tank.

    How mature should the tank be for the nennie? What would the recommended lighting be for my tank, i thought 4 24w's would be sufficient.

    I will remove the lave rock first as this seems to be quite red with Algae.
     
  8. Evo R

    Evo R

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    A mature tank is anything from nine months to a year.
    Remove the cyano covered lava rock first, and then wait a day or two and then remove the noodels bit by bit as not to shock the system to hard.
     
  9. Evo R

    Evo R

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    And your lights are fine, its just other minor things in your tank that need to change first.:)
     
  10. ScottK

    ScottK Thread Starter

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    Will sort that out as soon as I get home and wait till the end of the year before I add any anemones again.

    Will also try to source some macro algae for the sump ASAP.
     
  11. Evo R

    Evo R

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    And remember some pics of your tank and sump:p

    You will quickly realize that most of us here are all pic-o-holics!!
     
  12. ScottK

    ScottK Thread Starter

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    No problem, will take some pic's when I get home this afternoon :)
     
  13. ScottK

    ScottK Thread Starter

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    One more thing, how deep does a DSB need to be to be effective?
     
  14. Tobes

    Tobes Retired Moderator

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    12-15cm with fine sand. The surface area is also important, the bigger the better.
     
  15. ScottK

    ScottK Thread Starter

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    Eish, got the fine sand thing going but it's nowhere near 12-15cm. Will measure tonight and see what it actually is.
     
  16. Tobes

    Tobes Retired Moderator

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  17. ScottK

    ScottK Thread Starter

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    I measured my DSB which isn't that deep, it's around 8cm's. As you can see from the below pic's I don't have a huge amount of space, should I add some more sand or rather get some macro algae?

    Here are some pic's, will try and get some better pic's with my Canon and a tripod at some stage.

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
     
  18. Tobes

    Tobes Retired Moderator

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    What's your nitrate and phosphate readings? I see you got some cyano :(
    That DSB in the sump is too small to really be affective in my opinion. Here are some options I would've done

    1 - take out sand and fill with live rock and small powerhead for flow inbetween (no light required)

    2 - take out sand and only put chaetomorpha macro algae in there (light required on reverse cycle)

    3 - leave a bit of sand and put few pieces of live rock and/or macro algae, like a small refugium for pods to breed (light required)

    4 - Take out sand and put reactor with NP pellets.
     
  19. ScottK

    ScottK Thread Starter

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    I'll need to take the readings tonight, what test kit is the best to use? I have a kit that gives a rough indication but not an actual value.

    Do you think the current amount of sand with some LR and macro algae will be sufficient? I have a small 14W PC in there at the moment, the ballast is 24w so I can always upgrade the bulb.
     
  20. Tobes

    Tobes Retired Moderator

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    I like Elos test kits, but Salifert is good as well.

    I would remove some sand if you wanna go that route. It also depends on what macro algae you want to use. If you gonna use chaeto in the sump then live rock will prevent the chaeto from tumbling - which is not ideal. So rather just a bit of sand and a ball of chaeto, or just live rock, or live rock with a different type of macro algae like caulerpa. But caulerpa is more challenging to keep than chaeto cause if not treated right, it can go sexual and release toxins into the water column. Chaeto is safer :) - ask @RiaanP

    The light needs to be on top of the algae for best results. I used normal cool white energy saver globes over my chaeto.
     
    Last edited by a moderator: 26 Nov 2015
  21. DanieDJ

    DanieDJ

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    tests

    Some shops can do complete test on your water if you don't have the right test kits, I don't know know jhb so well but do invest in a decent test kit.My test kit is from Hagen and gives very accurate readings.
     
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