Flow while cycling?

Discussion in 'Beginner Discussions' started by moz, 13 Nov 2007.

  1. moz

    moz

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    How much flow do I need while cycling? I had quite good flow but due to what I think is an electrical problem I made some changes which results in a lot less flow, I still have water movement throughout most of the tank, but not that much.
     
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  3. Alan

    Alan Admin MASA Contributor

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    That should be fine Moz, as long as you get the flow back up before you start adding live stock.
     
  4. Mike

    Mike Retired Moderator

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    Before you add any live stock, you will need to get your tank flow to around 20x volume (a rough guide, lots more for sps perhaps less for fish only)
    You need to calculate by taking the water volume then add up all the ltrs per hour of your powerheads and divide the total powerhead volume by the tank volume.
    I.e. 1000 litre tank volume.
    4 powerheads at 5000 litres per hour = 20,000ltrs per hour
    20,000
    1000 = 20 times turn over,
    It's worth noting that as you add liverock and corals your flow will be slowed so you may need to increase your powerheads as you go.
     
  5. Rory

    Rory Admin MASA Contributor

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    The topic sounds like a tampon ad... :(
     
  6. Mike

    Mike Retired Moderator

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    You need to get out more fella:whistling:
     
  7. Mekaeel

    Mekaeel Moderator MASA Contributor

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    sis man :rofl:
     
  8. leslie hempel

    leslie hempel Moderator MASA Contributor

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    ouch thats hash...
     
  9. Kanga

    Kanga Retired Moderator MASA Contributor

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    AG no sis man Rory, this is a family forum. :whistling:


    But hey it does sound like it:lol:
     
  10. moz

    moz Thread Starter

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    Ignoring posts 4 and onward, thanks for the advise, I’ll defiantly be adding some more powerheads before I stock the tank, just threw in what I had when I main pump starting giving me problems, at the moment flow is about 3-5x volume.
     
  11. Shaun

    Shaun Retired Moderator

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    Witch is better having 2 big powerheads or 4-6 smaller ones?

    I would go for maybe one bigish one and a few smaller ones.
     
  12. Ocean

    Ocean Lazy Sea Slug

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    i would go for all small then you have more spead of water flow
    thats my 2 cents worth
     
  13. Mike

    Mike Retired Moderator

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    You would certainly get even flow with lots of smaller p/h's but if you have a, say 2m tank, you will still need a decent size p/h just to move the water about, my 2m will have 4 deltec 6080's (8000lts/p/h) and an eheim 1260 as a return and that i think will still be quite tame compared to some.
    i think good flow is better than high flow, the flow needs to go round/in/under/over your rock work to stop deadspots etc
    So i would say that you need to look at your tank and try to work out what you will need to schieve good flow
     
  14. DragonReef

    DragonReef

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    Hey Fireshrimp, welcome to MASA.
     
  15. Ocean

    Ocean Lazy Sea Slug

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    Thanks DragonReef
     
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