How to understand the volume of tank before lighting

Discussion in 'Lighting' started by Sangeeth Ramanunni, Jun 29, 2016.

  1. Sangeeth RamanunniNew MemberMember

    First up all, I apologize if the caption was confusing. Here is my doubt.<br>
    I have understood that 3WPG (3 watts per gallon) is considered 'high' lighting and is sufficient for carpeting and all. I have a 1 cubic foot betta tank (1x1x1 ft3) which-with the help of google converter- I realized that is a 7.48 Gallon tank.<br>
    But, I have filled to a height of 3" with substrates and around an inch above is not filled with water. I have two medium size rocks also.<br>
    Now the volume of water that can be filled is approximately 5.5 Gallons.<br>
    Which volume is to be considered here in order to light up the Tank? <br>
    Which T5 is gonna be perfect? 24 watt considering the total volume or 15 watt considering the water volume?<br>
    Also, If I switch to LED, what should be the wattage (or lumens or whatever)?<br>
    <img src="" border="0" alt="" title="">
  2. TexasDomerFishlore LegendMember

    So watts per gallon isn't a good way to measure light needs for the tank - PAR is considered the gold standard.


    So you want high light? Are you injecting CO2? What kind of ferts will you use? What kind of plants do you want to grow?
  3. Sangeeth RamanunniNew MemberMember

    DIY CO2 is used.
    I have Brazilian micro sword , Rotala Rotundifolia (Hi red and green), Alteranthera Reineckii and Ludwigia Repense which I understand, do well when appropriate light and CO2 are provided.
    I also have Bacopa Monnieri, Peacock moss and
    Monosolenium tenerum.
    The light I have is just a 4W LED (philips) with 360 lumens. It looks bright but its not sufficient, I guess. Red plants are not showing their true colors and brazilian micro sword is not spreading well.
    I am using Contro soil as substrate and plant Nutrients. I've not read the link u sent me. I ll check and be back. Thanks
  4. Sangeeth RamanunniNew MemberMember

  5. TexasDomerFishlore LegendMember

    I'd definitely upgrade your lighting. I recommend the Finnex Planted Plus or the Ray 2. If that's not enough, you can add a second fixture.

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