+ Reply to Thread
Page 5 of 6 FirstFirst 123456 LastLast
Results 41 to 50 of 53

Thread: red/blue led grow bulb

  1. #41

    Join Date
    Apr 2014
    Location
    USA
    Posts
    5
    What do you guys think of this bulb? http://www.ebay.com/itm/ABI-12W-PAR3...item4ad737bf86 The only thing I'm noticing is that most of the "good" lights I've seen are all running 660nm and this particular one is 620-630.. will that affect much?

    I found another one on Amazon but it's considerably more expensive.. and all the LEDs are red.. http://amzn.com/B004L5GQ1M

    Right now I'm running 2700K CFL bulbs (100W Equivalent) on my waterfall scrubber and I'm not getting the growth I'd like to get.. mostly brown junk rather than thick green algae... Click image for larger version

Name:	scrubber.jpg
Views:	407
Size:	71.6 KB
ID:	5462 Click image for larger version

Name:	scrubber 1.jpg
Views:	463
Size:	62.0 KB
ID:	5463 screen is roughly 11" long and 8" wide on my 90 gallon that gets fed 2-3x daily.. I know that I probably need my lights closer to the screen but I honestly have no idea how to go about doing that since I don't have much room in the stand...

    Any thoughts would be great though! Thanks!

  2. #42
    Administrator
    Join Date
    Oct 2008
    Location
    Salt Lake City, Utah, USA
    Posts
    10,566
    Welcome.

    Those LED bulbs should be good. Your current 18 watt CFL is way too small for a 88 square inch screen, and could use 2, 3, or 4 of the LED lights, preferrably on two side (2 bulbs each side)

  3. #43

    Join Date
    Apr 2014
    Location
    USA
    Posts
    5
    Quote Originally Posted by SantaMonica View Post
    Welcome.

    Those LED bulbs should be good. Your current 18 watt CFL is way too small for a 88 square inch screen, and could use 2, 3, or 4 of the LED lights, preferrably on two side (2 bulbs each side)

    Thanks a lot for the input! I'm running 2 23W CFLs (one on each side) but that's still probably not enough... I think I'm gonna go with the bulb from Ebay since it's cheaper, though. My project was interesting though, I tried making a floating algae scrubber but that wasn't really getting any growth after a month or so (most likely cuz of the lighting again). Click image for larger version

Name:	IMG_20140412_221733[1].jpg
Views:	568
Size:	86.9 KB
ID:	5467 So, I took it apart and made a waterfall scrubber using the tube that brings water from the overflow box.. Thankfully after three weeks now, it looks like it's starting to finally have some growth on part of the screen! Click image for larger version

Name:	20140626_224119[1].jpg
Views:	503
Size:	34.0 KB
ID:	5468 Can't wait to get the new LED bulbs and see what happens! Thanks again!

  4. #44

    Join Date
    May 2014
    Location
    Belgium
    Posts
    5
    Quote Originally Posted by Rmb0513 View Post
    Thanks for the quick reply wanted to see which size I needed to order up
    Thanks again Randy
    Did you place your order? Just ordered 2 x 30W of those today. I'm very cirious how fast they'll get here :-)

  5. #45

  6. #46
    Administrator
    Join Date
    Oct 2008
    Location
    Salt Lake City, Utah, USA
    Posts
    10,566
    A new clip-on option:
    http://www.ebay.com/itm/161252647371

  7. #47
    Administrator
    Join Date
    Oct 2008
    Location
    Salt Lake City, Utah, USA
    Posts
    10,566

  8. #48
    Administrator
    Join Date
    Oct 2008
    Location
    Salt Lake City, Utah, USA
    Posts
    10,566

    Testing of the 20 watt Chinese hydroponics light

    I bought the $20 Chinese "IP65, 20w" light from ebay, and cycled it on and off many times per day for a few weeks. Then I took it apart and did some measurements. I removed the power supply for the temperature measurements, because I only wanted to get the heat from the LED, which was a LOT:

    Click image for larger version

Name:	20w-chinese-1.jpg
Views:	380
Size:	52.2 KB
ID:	6434 Click image for larger version

Name:	20w-chinese-2.jpg
Views:	326
Size:	64.5 KB
ID:	6435 Click image for larger version

Name:	20w-chinese-3.jpg
Views:	339
Size:	52.2 KB
ID:	6436 Click image for larger version

Name:	20w-chinese-4.jpg
Views:	370
Size:	38.8 KB
ID:	6437 Click image for larger version

Name:	20w-chinese-5.jpg
Views:	316
Size:	40.2 KB
ID:	6438 Click image for larger version

Name:	20w-chinese-6.jpg
Views:	334
Size:	60.7 KB
ID:	6439 Click image for larger version

Name:	20w-chinese-7.jpg
Views:	384
Size:	55.4 KB
ID:	6440

    So it turns out that the LED is getting .59 X 22.8 = 13.5 watts

    As thought, the Chinese LEDs are labelled higher than their "real" watts. However, it is still a tremendous amount of heat and light. The back of the case, and the front glass, get too hot to keep your hand on. And the LED lens itself gets sizzling and will burn you.

    Overall, even though it's not CE or UL rated, it's a good splash-proof light for the money. Just don't drop it in the water, because water will get inside and short the line voltage there.

  9. #49

    Join Date
    Mar 2016
    Location
    Australia
    Posts
    3
    Greeting Everybody,

    I'm new to ATS. At the moment, I'm gathering as much information as it's possible to be able to build my first ATS. I want to go with LED light but there are way too much to choose the most suitable one. If I've read well there are differences between DIY LED and buying a ready-to-go one. Hence, I'm a bit confused. Could you, please, help me to decide which would be good.

    I have a 180 gal system (DT+sump) with medium stock (22 fish) I think but I plan to add more soon/later. There is FrozenReef's 180 gal tank with a 18"x12" screen by T5HO. If I use LED could I go with a smaller screen?

    Here are a few LED lights that I found on the local ebay. Could you give your opinions about them?

    1. http://www.ebay.com.au/itm/120W-1365...torefresh=true
    One of each sides.

    2. http://www.ebay.com.au/itm/10W-20W-3...ASTp8jtdwhUu-g
    Two of them each sides (4x50W).

    3. http://www.ebay.com.au/itm/30W-LED-B...3D131740213320
    One of each sides.

    4. Any other recommendations?

    Sorry if I asked too much questions.

    Thanks for your reply in advance!

    Jani

  10. #50
    Administrator
    Join Date
    Oct 2008
    Location
    Salt Lake City, Utah, USA
    Posts
    10,566
    Welcome from Australia.

    Although most China lights only actually have about 2/3 of the wattage they state, the 120w one is still way to much. You don't say how much you feed, but probably 3 to 5 cubes a day based on 22 reef fish. So although you could do a smaller screen than 10 x 12, if you use the lights you found, they would shine around (and miss) some of the screen. So 10 x 12 is fine.

    The 30w one with multi LEDs works well; one on each side, about 5 inches away.

    And the 30w version of the water resistant one works well; one on each side. 50w is too much, especially two of them on each side. You might have been thinking of CFL lights instead. LEDs only need half (or less) of the wattages for CFL or T5.

+ Reply to Thread
Page 5 of 6 FirstFirst 123456 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts