Supplementing HPS with LED

Discussion in 'Lighting' started by jhenson, Jan 23, 2014.

  1. Has anybody tried supplementing HPS with LED lights?  I'm sure this is asked all of the time, but I can't seem to find any quality information online.  I've read a few things where people dropped to a smaller HPS and supplemented with LED lights.  From what I've read, HPS will give you the raw power needed, while LED in the right spectrum will help with crystal formation.  Is there any truth to this?  If so, what are some good LEDs to get, either with e27 bases, or diodes I can wire up myself.
    Thanks for any insight you can offer.

  2. I too am curious as I just added a 900W MARSII to my 600w hps... I can only see benefits. however because there is barely any heat, how close should the light (900w LED) be to a flowering plant. I have read that too close will cause loose airy buds..can anyone confirm this or offer any input
  3. I don't have the links to the threads where this is discussed, but yes I just read about this yesterday.  One of the BEST ways to use LEDs is to supplement HPS's (versus using them for the entire operation).  In general, if the LEDs are under 3W you can put them as close as 6" away from the plant.  Depends on how large your grow space is, and the fact that you don't want to block your HPS.  Using LEDs as side panels would be ideal in this kind of situation, or set on each side of the HPS.
  4. #4 TinTizzy, Jan 23, 2014
    Last edited by a moderator: Jan 23, 2014
    just get a dual arc bulb if you want more spectrum
  5. I I have a 5W 900 watt led sitting on the other half of the tent how close should I put the ladiesSent from my TF300T using Grasscity Forum mobile app
  6. Start off at 12", move further if you see any burning/laser spots
  7. I started sourcing LEDs and it seems I can get about 300 watts worth if I arrange the diodes myself.  Should I stick with a 1000W HPS or drop down to a 600 if I supplement that much LED?
  8. Hi all, this is my first post here. Been playing with trying to increase my yields with my medical grow. I have two 250 HPS bulbs in cool tubes in a 2X4 tent. It's been a pretty good set up, but I haven't been able to pull a gram per watt out of it yet. I added twenty 3 watt 660nm LEDs that I simply stuck to the cheap bat wing type reflectors that come with the cool tubes. I wired them up with a simple Inventronics driver with power supply, and already it seems the girls are loving the addition. It seems like the HPS might drown out the 660s, but I can see the red light all the way to my feet, so it seems like its got some serious penetration. I'm only about three weeks into flower, so the resin production isn't much yet, but I expect it to be more than the last run without the 660s.
    I only added one wave length to supplement my HID lighting and am impressed so far. I haven't found much info out there, either, so experiment!
  9. thoughts on a 250w with a marsII 900w in a 4x4

Share This Page