Lighting

Discussion in 'Beginner Discussions' started by Timone, 22 Jun 2011.

  1. Timone

    Timone

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    Hi Guys,
    Need assitance with my tank lighting and flow.
    Tank size is 1500x650x600
    I have 6 t5 x 54w (3 White ( 2x15000k giesmann and 1x 10000k reeftek)
    (2x BLue reeftek and 1 x Astinic reeftek)
    All lights are only 4 months old.
    Having a huge cyno and GHA issue. The GHA issue is busy resolving itself due to phospate reducing media. But Cyno still a huge issue.
    Flow in the tank could also be wrong I have 2 x sun sun 12000 l/h circulating water in a clock wise dirrection. One on eth one side of teh tank and the other on the other side of the tank. No blowing against each other but rather forming a circle motion.They are both sitting near the top of the tank.My return pump is pushing 2500 l/h.
    So my question is what is the right lighting combo and flow for the tank
    Light config at the moment is
    1x astinic 2x white 1x blue 1x white 1x blue.
    All he coral are happy. Pulsing xynias are spreading and so is the white star polyps. the sponges are also growing well. I have been dosing stability as well for the last week. Like i said the gha is finally subsiding but the bubble algea and cyno is killing me.I do a water change every second week of around 20 % and I dose the week I don't do a water change with trace elements and strotium.
     
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  3. rakabos

    rakabos

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    That was painful to read with all the spelling mistakes geez
     
  4. Quintus

    Quintus the irish aXeman

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    :lol:
     
  5. Evo R

    Evo R

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    :lol:
     
  6. Evo R

    Evo R

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    It sounds like your tank is still very young(4months old)
    So the cyano can still be part of the last stages of your tank's cycle.(Remember the initial cycle of 4 weeks is just to get your tank ready for the first fish or two)
    Random flow is always better than circular flow.

    If it was my tank, i would place both flow pumps on the back of the tank.In the middle to upper region of the back coners.Both pointing to the middle of the front glass of the tank.Slightly upwards at a 30 to 45 degree angle. That should give you nice strong random flow.

    Also look where the biggest part of the cyano is growing.(Normally in very low flow areas)

    And when you do water changes, try to siphon off all the excess algae that you can.
    And only add stability when you do your water changes, as adding to much bacteria can also lead to unwanted algae blooms.

    Hope this helps.
     
  7. Evo R

    Evo R

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    Also...by pointing your flow pumps slightly upwards, you aggetate(mind the spelling,eks eintlik aftikaans) the water surface there by promoting better gas exchange. Effectivly bringing in more o2 in the water.
     
  8. 459b

    459b Moderator MASA Contributor

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    Thats a little harsh - there were not that many mistakes to warrent such a comment.

    What corals do you have in your tnak? Lighitng setup/combo sounds fine.

    Cyano could be casue of lack of flow or perhaps overfeeding. What are you dosing in terms of food and additives?
    I would suggest placing the pumps to create a bit more of a random flow. PLay around with placement till you get as few dead spots as possible. Try moving one of the pumps deeper in the tank to get more flow over the substrate.
     
  9. rakabos

    rakabos

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    **rant removed**

    Cyano comes from high nutrients in the tank (overfeeding, underskimming) and is also caused by older lights which start to emit the wrong spectrum of light as a result of old age. Cyano in itself isn't a bad thing except that it is ugly and MAY smother your polyps if it gets out of hand.

    Try some purigen and other methods to remove the nutrients in the tank, maybe a filter sock.
     
    Last edited: 22 Jun 2011
  10. TheWaterboy

    TheWaterboy Sponsor

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    return pump is too small as it wont pump 2500 litres with a head hight......
    too much white light for my liking........
    check your r.o.water quality..........
     
  11. Braco

    Braco

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    Sorry to take your thread...but can anyone please tell me..the 20 000k MH is it just as good..because i see everyone uses either the 14000k or the 16 000k..Please advise..Thanks B
     
  12. pXius

    pXius

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    Its mostly a case of preference.

    You'll see that on most US sites people prefer 20K as it gives them a "bluer" look.

    14-16K looks more natural. Also there's quite a bit of research proving that coral growth is better at lower kelvin levels, like 14K, not saying that 20K wont grow it at all, just slower.

    :lol:
     
  13. Braco

    Braco

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    Thanks pXius appreciate the feedback..
     
  14. Timone

    Timone Thread Starter

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    Thanks for the feedback guys. Will attend to the low flow areas.
     
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