Shallow reef tank planning and progress

Discussion in 'Medium Tanks' started by Max98, 5 Dec 2010.

  1. Max98

    Max98

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    Hi.

    I am starting a shallow reef tank and is in the process of planning and acquiring some of the parts for my new reef.

    I have been out of the hobby for a while and the bug bit me again.

    So this is the plan.

    120 x 80 x 45
    Overflow at 40 cm, so the water level should probably be at 41-42 cm

    Slim c2c overflow

    Lighting:

    I am going led. I have made a led fixture for my planted tank but I am downsizing my planted tank to make space for my reef.

    I have cut up my planted tank led lighting and I am changing it for my reef tank.If I had the luxury to start over, I would have done some things different, but I feel it is still good lighting.

    I am building 2 pendants. After the modification it came out as 38 x 48 pendants.

    Each pendant will have 14 cool white cree xp-g led's and 12 royal blue cree xr-e Led's.

    I did a quick calculation on price and it works out to:
    Dimmable Per Pendant: R2300
    Non Dimmable : R1800

    Water flow:
    I have taken advantage of the tunze birthday special and bought two nanostream 6055's and a controller.

    I am also in the process of building a scrubber. I have bought four of the T4 20w under counter lights that I will use. I am planning to be patient and test the tank with only the scrubber with very little livestock.

    I am planning to use the 4000L/H reef octo water blaster return pump, as I need to get 2800+ l/h from the return to run my scrubber off.

    That is all I can think of right now.

    Any comments welcome.
     
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  3. Max98

    Max98 Thread Starter

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    Realized I forgot to add import duty on the LED's so the dimmable will be R2500 and the non-Dimmable R1950
     
  4. Annoying

    Annoying

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    Sounds awesome! Would love to see the pendants, LED is taking over it seems these days.
     
  5. crispin

    crispin

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    sounds like a nice system:)

    what height of stand are you aiming at using and are you going to go open top or with a lid?
     
  6. Max98

    Max98 Thread Starter

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    I will see what I can do. I am done with the white LED's but I am still waiting for the extra blue leds from the states.
     
  7. Max98

    Max98 Thread Starter

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    I am planning to make the stand 1m high, so the total height would come up to 1.45m
    Low enough to easily get my arms in the tank. :)

    I am planning on going rimless open top.

    Don't know if I may post links but this is almost what I want to achieve with the led's(Last 2 images on the page)
    LED build and PAR readings (pic intensive) - Reef Central Online Community
     
  8. Manic

    Manic Moderator

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    My new tank is 1200mm x 800mm x 500mm with water height at 450mm. I'm glad I didn't go shallower. Maybe you should make your tank 500mm high. Your return pump would be way too strong. I'm using a 2500Lph return pump and it already seems too strong for the tank.
     
  9. Max98

    Max98 Thread Starter

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    Giving me something to think about. :)

    How close to the rim does your water get with proper flow?
    I would like to have a small piece of glass visible at the top.

    If my calculations is correct my water level will only be about 3cm lower than yours.

    What looks to be the limiting factor on your return size? Is it the flow in the tank that is too strong or the overflow not coping? My problem is that I need close to 3000 L/H to run the scrubber.

    Looking forward to see your pics. :)
     
  10. Manic

    Manic Moderator

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    My water is about 4cm from the rim, I did it this way for the wave. My overflow can handle the flow but it just seems to me that the water is flowing too fast through the sump. Just a thought though, I've got a c2c overflow and the level of the overflow is 455mm and the level of the water in the tank is 460mm.
     
  11. Max98

    Max98 Thread Starter

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    Thanks. I will think about having a return pump and a separate scrubber feeder pump.

    I will also consider going a little deeper. Maybe overflow at 45 and total height at 48. I am not planning to make huge waves. :)
     
  12. Max98

    Max98 Thread Starter

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    This is what the unfinished pendant looks like with the white led's. (Bad cellphone pics)
    [​IMG]
    and the individual led with the 65 degree optic
    [​IMG]


    I have bought the 45 and 65 degree optics for the whites. I still need to test the spread and intensity on the tank and decide what optics to use. Probably a mix with the middle ones being the 45 degree optics.
     
  13. Manic

    Manic Moderator

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    Wouldn't you rather want the middle ones to have the 65 degree optics and the outer ones the 45 degree optics. This will provide the best spread and prevent excess light from being cast outside the tank or on the edges where corals are rarely placed.
     
  14. Max98

    Max98 Thread Starter

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    The 45 degree optics give off quite a bit more par than the 65 degree optics.

    The one guy on RC uses 40 degree optics and has to lift his pendant 4 ft(+- 1.2M) off the water level and still doesn't get light on the glass, so I am aiming to get the intensity in the middle and a bit more spread with my tank being 80 wide.

    I don't want my pendant 1.2m high suspended, but rather 50 - 70 cm.'

    I will maybe have to go with all 65 degree lenses.
     
  15. Manic

    Manic Moderator

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    That is insane. Rather go with the 65's then.
     
  16. Tremayn

    Tremayn

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    cool LED's :)
     
  17. RiaanP

    RiaanP Moderator

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    Can use the one big return pump, to run both your return and scrubber. Cheapest option is ballvalves from Chamberlains (Builders Warehouse should have the same, amongst other places.) But they are threaded. Just need to buy the thread to slip connectors very cheap and you then use your flexible tubing to connect it all. And it take less space in your return chamber, one bigger pump vs 3 smaller pumps. And it is easy to set.

    I run 3 lines from my pump, the return, phospate reator and cryptic tank.
    [​IMG]
     
  18. RiaanP

    RiaanP Moderator

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    But I must admit, that water blaster return pump, is expensive for what you get. It got excellent flow and it is better on wattage consumption than others. I did a comparison.

    Best return pump? - Marine Aquariums of South Africa

    But
    For the same price, you can rather use 2 other pumps. Although the combined wattage will be more.
     
  19. Max98

    Max98 Thread Starter

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    Good idea, Thanks.

    I am looking for a low energy consumption and have decided to rather spend upfront to avoid bigger running cost.

    I am just hoping they are quiet.
     
  20. Max98

    Max98 Thread Starter

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    My blue LED's have arrived and I have completed one of the pendants. Will post pics later.

    My plans have changed a little.

    I am planning to make my tank 160 x 80 x 45 now.

    I want the extra space to have an open scape.
     
  21. Max98

    Max98 Thread Starter

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    I want to build my stand next week and just want to find out what steel to use.

    Tank size 160 x 80 x 45 (570l if full to the rim)

    Would 50mm x 25mm (3mm thick) rectangular tubing be sufficient?
    or 50mm x 50mm (6 mm thick) angle iron?

    Thanks
     
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