Lighting a 20 gallon long reef

Discussion in 'General Reef Discussion' started by fattytwobyfour, Sep 7, 2018.

  1. fattytwobyfour

    fattytwobyfour Grouper

    I had some extra equipment laying around, and decided to setup a 20 gallon long in my bedroom. I am currently using a Maxspect nano in the tank, but there are some shadows in the corner. Any light recommendations to fully light this tank up? I would mainly like softies and lps in this tank, but also looking at a birdsnest, and something like a rainbow or sunset monti. The tank is 30" long.

    Botheboss likes this.
  2. After seeing the visual difference T5s make along with LED, I vote T5.
    huntindoc likes this.
  3. huntindoc

    huntindoc RRMAS BOD Membership Director Staff Member

    Agree with SilentReefer. T5's are inexpensive and are proven coral growers. If you want to go LED there are some newer versions with diffuser lenses that might cover a 20L with one light.
    SilentReefer likes this.
  4. fattytwobyfour

    fattytwobyfour Grouper

    Any recommendations on a T5 fixture? It needs to cover 30", since that is the length of the tank. I have been researching, but honestly not sure what to go with.
  5. The least expensive you can find with reflectors.

    I was going to get a hydroponic but Odyssea was on sale through eBay.
  6. portereef

    portereef RRMAS Supporter

    I would go with a 24'' t5 or possibly get an LED thats a bit larger to allow coverage. I currently have a ball python in my 20 gallon that I use for new coral qt but before I had the snake I was using a maxspect razor that is 24" with t5 supplements. I put higher end sps in it so I was going heavy on the light.
  7. fattytwobyfour

    fattytwobyfour Grouper

    Do you think a 24" t5 light would cover the 30" tank without shadowing the corner? I've never ran t5s, but my LEDs only spread 24" wide, and that's the issue.
  8. portereef

    portereef RRMAS Supporter

    There will be some shadowing with them if you don't have the light high enough off the tank. I am using them right now on my 48'' tank and they cover most of the tank and they are only about 6 to 8 inches off the water. So it won't be a whole lot of shadowing and with that said its only 2 blue plus bulbs.
    fattytwobyfour likes this.

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