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Thread: Rebuilding a 300 gallon mixed reef

  1. #1

    Rebuilding a 300 gallon mixed reef

    I have a 300 gallon mixed reef that was awesome up to the crash due to 9 days of power outages during the Alabama tornadoes in April of this year.

    I am now building a LED system and want to go with a ATS for this system, I am in need of advice from you successful ATS guys out there. The tank has an external coast to coast overflow and a 5' long sump, without the skimmer I can use 30" x 22" for the scrubber and would also like to use some LEDs for the scrubber as well.



    Any recommendations at least for a design starting point would be great. Start them coming

    Thanks
    Mike

  2. #2
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    Re: Rebuilding a 300 gallon mixed reef

    How much will you be feeding?

    Looks like the LED in the pic is for the display.

  3. #3

    Rebuilding a 300 gallon mixed reef

    I feed a two inch by two inch square of rods food daily. My plan is to have a school of anthias and a dozen tangs with a trigger.

    The lights I have thus far are for the display lighting and need to build one for the ATS.

  4. #4
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    Re: Rebuilding a 300 gallon mixed reef

    Use this for sizing, and try using 1/2 the wattage:

    An example VERTICAL waterfall screen size is 3 X 4 inches = 12 square inches of screen (7.5 X 10 cm = 75 sq cm) with a total of 12 real watts (not equivalent) of fluorescent light for 18 hours a day. If all 12 watts are on one side, it is a 1-sided screen. If 6 watts are on each side, it is a 2-sided screen, but the total is still 12 watts for 18 hours a day. This screen size and wattage should be able to handle the following amounts of daily feeding:

    1 frozen cube per day (2-sided screen), or
    1/2 frozen cube per day (1-sided screen), or
    10 pinches of flake food per day (2-sided screen), or
    5 pinches of flake food per day (1-sided screen), or
    10 square inches (50 sq cm) of nori per day (2-sided screen), or
    5 square inches (50 sq cm) of nori per day (1-sided screen), or
    0.1 dry ounce (2.8 grams) of pellet food per day (2-sided screen), or
    0.05 dry ounce (1.4 grams) of pellet food per day (1-sided screen)

  5. #5

    Rebuilding a 300 gallon mixed reef

    Ok so if I frozen cube cut in half (to equal the thickness of rods food) and placed side by side that is close to 1 sq. inch. So if 1sq inch of food is 12sq inches of screen then I need to multiply by 4 to equate 4 sq. inches of food so I need 48 sq. inches of screen.

    Now if I do 48 sq. and only light one side I can always add more lighting if needed, but how do I tell if I need more.

  6. #6
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    Re: Rebuilding a 300 gallon mixed reef

    If you only light one side, you can only feed half as much. Best would be 24 watts per side.

    If it does not start growing green within a few weeks, it's not enough light.

  7. #7
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    Re: Rebuilding a 300 gallon mixed reef

    Two sided, its the way to go if you can. I have 4 scrubbers, two one sided and two double sided. The double sided are much stronger if you can go that way. Either way its still better then the old fashioned way LOL!!
    150G. Reef/Mix
    125G. 3 Regular Oscars/1 Jack Dempsey
    75G. 20+ Africans
    40G. Fish/Reef. Algae Scrubbers on ALL my SW
    10G. SW Fish/Reef.
    10G. SW Hospital/new fish quarantine/pod breeder tank
    6 stage RO/DI system 200 GPD.

  8. #8

    Rebuilding a 300 gallon mixed reef

    I can go any of the two I am looking for some help in the design. Please feel free to give me ideas

  9. #9
    kerry's Avatar
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    Re: Rebuilding a 300 gallon mixed reef

    Here is an example of an easy build.
    [attachment=0:s4hgmqcn]2011-09-26_05-44-22_857fix.jpg[/attachment:s4hgmqcn]
    Attached Images Attached Images
    150G. Reef/Mix
    125G. 3 Regular Oscars/1 Jack Dempsey
    75G. 20+ Africans
    40G. Fish/Reef. Algae Scrubbers on ALL my SW
    10G. SW Fish/Reef.
    10G. SW Hospital/new fish quarantine/pod breeder tank
    6 stage RO/DI system 200 GPD.

  10. #10

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    Re: Rebuilding a 300 gallon mixed reef

    Have a look at my "Gone LED" thread. I'd build it like that, but maybe up-size it a bit based on how much you want to feed. I wouldn't get too much wider than 24" on the feed pipe so that you don't need a huge amount of flow. I wouldn't mess with dimmable drivers. Just get drivers that run the LEDs at somewhere in the range of 500-700 mA. You can get acrylic already cut to size from TapPlastics.com, so building the scrubber box is easy. Just take the pre-cut pieces and glue them together with weld-on #16.

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