DIY LED suggestions

Discussion in 'Planted Tank Equipment' started by SilverJ87, Jul 21, 2016.

  1. SilverJ87
    Offline

    SilverJ87 Algae harvester

    • APSA Member
    53%
    Joined:
    Jul 17, 2013
    Messages:
    555
    Likes Received:
    21
    Trophy Points:
    28
    Location:
    Welkom Free State
    Hello to all

    I need some advice regarding my lights.
    Ive got a standard 4ft tank which has 2 open spaces on the top on the sides and a support of 6mm glass in the middle.

    Ive build a DIY 3w strip which has white, blue and red leds with 10 leds on a strip and there is 4 strips.

    Im not completely satisfied with the lights at the moment so im thinking of getting 2x 30w/50w LED floodlight to put them on the open spaces.

    Is there anyone who can comment on the idea that im planning or anyone who has the same tank and did some other DIY plan they are satisfied with?

    I quickly drafted an paint image to use as an example of my tank the gray area is the support. Untitled.png
     
    mrtnotion likes this.
  2. Trev Pleco
    Offline

    Trev Pleco Algae destroyer

    • APSA Member
    23%
    Joined:
    Jun 27, 2010
    Messages:
    5,767
    Likes Received:
    1,760
    Trophy Points:
    223
    Location:
    Constantia, Cape Town
    how deep is your tank ?
    50w would be an overkill IMO, 30w should be more than fine. I'm currently experimenting with x1 30w and x2 20w on a 170m tank and 65 deep..
    Did you see my post regarding the LED grow lights ?
     
    mrtnotion likes this.
  3. SilverJ87
    Offline

    SilverJ87 Algae harvester

    • APSA Member
    53%
    Joined:
    Jul 17, 2013
    Messages:
    555
    Likes Received:
    21
    Trophy Points:
    28
    Location:
    Welkom Free State
    how long are you doing this experiment so far? what are youre experience with the flood lights so far?
     
    mrtnotion likes this.
  4. SilverJ87
    Offline

    SilverJ87 Algae harvester

    • APSA Member
    53%
    Joined:
    Jul 17, 2013
    Messages:
    555
    Likes Received:
    21
    Trophy Points:
    28
    Location:
    Welkom Free State
    Sorry missed that part my tank is 45 deep, no havent seen your post will try to do a search for it
     
  5. SilverJ87
    Offline

    SilverJ87 Algae harvester

    • APSA Member
    53%
    Joined:
    Jul 17, 2013
    Messages:
    555
    Likes Received:
    21
    Trophy Points:
    28
    Location:
    Welkom Free State
    ohw yeah found that post but couldnt find the answer im looking for in there.. seems like there isnt a lot of ppl in here that tried the flood light way
     
  6. Joshua Tree
    Offline

    Joshua Tree Valued Contributor

    • APSA Member
    23%
    Joined:
    Aug 15, 2012
    Messages:
    5,089
    Likes Received:
    1,626
    Trophy Points:
    223
    Location:
    Cape Town
    @FrankyBZN - what about 12v downlighting? I have no experience with LED's on tanks but use them in my kitchen and they seem extremely bright
     
  7. SilverJ87
    Offline

    SilverJ87 Algae harvester

    • APSA Member
    53%
    Joined:
    Jul 17, 2013
    Messages:
    555
    Likes Received:
    21
    Trophy Points:
    28
    Location:
    Welkom Free State
    hey @FrankyBZN i havent thought about using the leds that you bought see the body is very big and if you gonna use a lot it might start looking weird. i think the colour temp 6000k is a starter point in leds for a tank. although later on look to assemble a DIY LED system there you can determine the lights better by the wavelength (NM) of the LED. i really think it is not necessary to use a reflector since all the light of the unit will be facing down, they use reflector to get some of the light that shine out on top into the tank.
     
  8. R.C.
    Offline

    R.C. Moderator Staff Member

    • Global moderator
    23%
    Joined:
    Jul 4, 2006
    Messages:
    4,399
    Likes Received:
    706
    Trophy Points:
    123
    Location:
    Cape Town
    If aesthetics to human eye is of any concern, then I would suggest looking into higher CRI LED's.
    You'll find that the better LED units specific to our hobby will have a CRI of 90 plus.

    The LED's in flood lights don't have particularly good CRI (in stock application they don't need to), so in appearance (cool whites) they make a tank look overly clinical, with reds in particular appearing washed out. Adding a warm white will help balance out the clinical look, adding reds and blues and greens may help those colours pop a little, but you will never get that realistic natural vividly colourful look of a good fluorescent lamp combo or HCRI LED's.

    Note that you also simply can't trust the Kelvin ratings on these flood lights.
     
    Clare likes this.
  9. SilverJ87
    Offline

    SilverJ87 Algae harvester

    • APSA Member
    53%
    Joined:
    Jul 17, 2013
    Messages:
    555
    Likes Received:
    21
    Trophy Points:
    28
    Location:
    Welkom Free State
    okay to look ar something else you guys who uses LED chips what deg of lens do u use?
     
  10. FransCronje
    Offline

    FransCronje Noob

    • APSA Member
    90%
    Joined:
    Dec 12, 2012
    Messages:
    55
    Likes Received:
    16
    Trophy Points:
    18
    Location:
    Heidelberg GP
    I am using 6 strips of 5050 leds ,60 /m and 300lm per m, also 1 m 5050 rgb for sunrise/sunset and my plants love it, they even pearl.
     
  11. Trev Pleco
    Offline

    Trev Pleco Algae destroyer

    • APSA Member
    23%
    Joined:
    Jun 27, 2010
    Messages:
    5,767
    Likes Received:
    1,760
    Trophy Points:
    223
    Location:
    Constantia, Cape Town
    sorry wrong thread will move
     
  12. tyronegenade
    Offline

    tyronegenade Specialist

    • APSA Member
    77%
    Joined:
    Oct 30, 2009
    Messages:
    2,707
    Likes Received:
    338
    Trophy Points:
    93
    Location:
    sunny Orange City, Iowa, USA
    I'm using LED COB chips/bars. I have 4 7W neutral white chips over my tank.
    [​IMG]
    I have to run them at 50% power else they over-heat. Other than that, they work great. I get over 100 PPFD about 5 cm from the chips, from the other side of the cover glass. The plants grow well so long as I provide ample CO2. In retrospect I should have got the cool whites instead of the neutral white as the tank looks too warm. Soldering them was a bit of chore but even I could do it (this was my first time soldering).

    If you are going to try LEDs make sure you get a proper heat sink else you are just wasting money. I am using a 0.75 x 1.5 inch, Aluminum Rectangle Tube as heat sink and it isn't nearly enough surface area for passive cooling. A small PC fan might make all the difference... If I had a proper heat sink I think I would have close on 300 PPFD going into my tank to grow the plans from only 28 W of light-power.
     
  13. SilverJ87
    Offline

    SilverJ87 Algae harvester

    • APSA Member
    53%
    Joined:
    Jul 17, 2013
    Messages:
    555
    Likes Received:
    21
    Trophy Points:
    28
    Location:
    Welkom Free State
    yeah ive got star heat sinks and they are mounted on a straight bar made of aluminum. so the heat that the leds produce are well spread and then 4 fans running with them to provide cool air and suck out warm air
     
  14. Puntius
    Offline

    Puntius Green fingers

    • APSA Member
    66%
    Joined:
    Dec 3, 2012
    Messages:
    1,439
    Likes Received:
    29
    Trophy Points:
    58
    Location:
    Brakpan
    Wow bud sounds like a great setup well done.


    Sent from my iPhone using Tapatalk
     
  15. SilverJ87
    Offline

    SilverJ87 Algae harvester

    • APSA Member
    53%
    Joined:
    Jul 17, 2013
    Messages:
    555
    Likes Received:
    21
    Trophy Points:
    28
    Location:
    Welkom Free State
    Yeah been a lot of savings and I need the rest of the stuff to see if the system will work better than my previous luck
     
    Clare likes this.
  16. SilverJ87
    Offline

    SilverJ87 Algae harvester

    • APSA Member
    53%
    Joined:
    Jul 17, 2013
    Messages:
    555
    Likes Received:
    21
    Trophy Points:
    28
    Location:
    Welkom Free State
    hope someone can give me some advice. is there someone who used lenses on say a 1/3/5w LED chip? do they just clip on or do you need to use some kinda glue?
     
  17. tyronegenade
    Offline

    tyronegenade Specialist

    • APSA Member
    77%
    Joined:
    Oct 30, 2009
    Messages:
    2,707
    Likes Received:
    338
    Trophy Points:
    93
    Location:
    sunny Orange City, Iowa, USA
    You will need to do some soldering. I suggest the LED COB strips for good light distribution. I got 4 7W chips as these spanned the length of my tank.
     
  18. Paul
    Offline

    Paul Plant menace

    • APSA Member
    77%
    Joined:
    Jul 31, 2015
    Messages:
    1,141
    Likes Received:
    414
    Trophy Points:
    93
    Location:
    Capetown
    @tyronegenade will this work for a planted tank.
    Meterial: Aluminum Alloy plate+COB LED
    Input Voltage: DC 12V
    Power: 5W
    Light Color: Pure White (6000-6500K)
    Luminous Flux: 600LM
     
  19. tyronegenade
    Offline

    tyronegenade Specialist

    • APSA Member
    77%
    Joined:
    Oct 30, 2009
    Messages:
    2,707
    Likes Received:
    338
    Trophy Points:
    93
    Location:
    sunny Orange City, Iowa, USA
    Hello,

    I would go with the higher Kelvin LED else the tank will look too yellow.

    Check the input voltage of the COB. Mine are 15W...

    Whether the 600 Lumen will be enough will depend on the water's surface area. For plants in a 45 cm deep tank you need at least 16000 lux (lumen per square meter). So 5 W for every 20 x 20 cm area would suffice.
     

Share This Page