In tank flow directon....????

Discussion in 'Chemical Filtration / Low Nutrient Systems - LNS' started by Jan, 1 Jun 2007.

  1. Jan

    Jan

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    Hi Guys/gals

    I have made a big change in my system this last weekend. Removed a very large DSB from the main display. With doing this though I have managed to add about 70/80 litres to the system.

    I have two Seio M620 (2400 lph) and a Seio M820 (3200 lph) that am using and the current was pretty good before I removed the DSB.

    This is how my tank looks now:

    [​IMG]

    1 x M620 is in left back corner blowing left to right down the back
    1 x M620 is in front right corner blowing across front of tank from right to left.
    1 x M820 is in right back corner behind rock work next to the weir blown right to left.

    The little pump in left I have since removed. I am lending a M2600, which is in it's place, blowing downwards across back of tank from left to rgiht. I have faced the M820 up towards the M2600.

    Ok here the queston of the thread is, hope I have given enough info...

    I am get a random flow in the tank now. Also seems to be more circular if that makes any sense.

    Here is a pic to show the flow:
    [​IMG]

    The M820 blows up toward the M2600 does break the flow a little which get a flow through the middle of the tank.

    Is this flow good?

    I am planning to get a new Resun Wavemaker 15000 next week. This will go where the M2600 is now. The M2600 will be removed and returned.

    It will then be the wavemaker and the M820 and the two M620's in the tank.

    Was thinking of running just the wavemaker and having no other pumps in the tank. Would this be fine?

    My other thought was to run the Wavemaker and then remove the M820, but place the two M620's at the back off the rockwork on the base blowing under the rockwork, hopefully lifting any detritus the whole time. Would that be a better idea?

    Would a "circular" flow be fine? Surely it breaks and does change direction as it hits against the rockwork, weir, sides of glass?


    Hope all this made sense, I know I rambled a bit. Hope the pic's help. Before I forget the tank is a 4ft, 1200mm (L) x 480mm (W) x 460mm (H)
     
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  3. Alan

    Alan Admin MASA Contributor

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    For a 4 ft this is plenty flow, and with the pumps facing each other like that there will be great random flow
     
  4. phat

    phat

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    tank looks nice dude!! what growing on your back glass?

    when you feed does the food circulate or does it get tossed around
     
  5. Bob the (reef)builder

    Bob the (reef)builder

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    Jan, I think you probably have very good flow. Watch the corals more than tying to figure exactly where everything is going, you may drive yourself bonkers otherwise.

    Ensure for most (almost all) corals that there is no direct current, and try to get some sort of switch device to change direction or strength of flows.
     
  6. DragonReef

    DragonReef

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    Like the new look Jan, your system will benefit with the additional water volume.
     
  7. Jan

    Jan Thread Starter

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    Thanks Man, think I have finally got the aquascape I have been trying to get.

    The food seems to circulate mostly, and then gets tossed around in the odd place or two....

    What is best?


    Pumps are facing each other or blow up towards the surface, so it should be fine Rob. Me is keeping a close eye on the corals, only one I am battling with is my one pin cushion, but have been moving him around, think I have finally found a spot where it is happy now.

    Rob I would like to replace the Seio M2600 with a Resun Wavemaker. It has it's own controller. Should that work better?


    Thanks DR.
     
  8. Bob the (reef)builder

    Bob the (reef)builder

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    The Resun will probably be better from the point of veiw that it changes force and offers different flow patterns to the corals by the fact that other currents may alter it when its in a lower power.

    So ya I think an improvement.
     
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