ppfd

  1. KAT-AL-LYST

    AC INFINITY- IONFRAME EVO8 - 730w Vs 2X 315 CMH.

    Hi guys, Has anyone been using the AC INFINITY IONFRAME EVO8-730W. Im looking at getting one. Currently, I have 2 x 315 CMH in a 4x4 foot tent. What can I expect if I decide to make the jump? Also, what are the pros and cons please? Thanks guy
  2. J

    PPFD Aps

    I use free lux and ppfd aps from google play. I assume they are not as accurate as dedicated meters. Anyone have any experience with these? This is my first grow. First couple weeks. I think I had light intensity too high just lowered. I identified some leaf heat or light stress. Now...
  3. B

    Light height for 4 ft tent

    I'm running a 2x2x4 grow tent with this light My question is, can I get away with hanging at the top of the tent and leave it at 100% or go with the manufacturer's instructions and dim accordingly to dial in ppfd range at given point of growth?
  4. B

    Ppfd distance calculation

    Found it a while back but forgot it. I'm looking for a site that has a calculator where you can put in the ppfd of your light and what height you want and it gives you said reading. Does anyone know of this? Thanks
  5. RainDan

    Choosing an LED Light

    Hello RIU, Lighting is arguably one of the more important, and expensive parts of your grow operation. We designed this guide to help you compare not only Timber Grow Lights, but any LED light. There are many factors to consider - hopefully this helps to answer some of the more frequent...
  6. B

    Dimmable light hanging height

    Starting a new grow with this light in a 2x2x4 and have some questions https://www.amazon.com/dp/B087JKDVTF/ref=cm_sw_r_cp_apa_glt_fabc_KG0K7211VMC5H4KA9BNP?_encoding=UTF8&psc=1 They show the hanging heights and the given ppfd levels... my only question is are they assuming that the light is...
  7. bellyofthebest

    PPFD for Vegetative state

    I’ve read a bunch of scholar journals proving Cannabis flowering excels at PPFD of 1500 even past 1800+ indoors. What I can’t seem to find is conclusive evidence on ideal veg ppfd numbers. At the moment I’m running 3 week old clones with 300-550 ppfd planning on 900 for veg once they have some...
  8. ElectricGrowerOKC

    Spider Farmer SF2000 VS Phlizon CREE COB 3000W Someone Smarter Than Me About Lights

    So I have a question for someone smarter than me. I am currently running 2 spider farmer sf2000 lights in my 4x3 grow room, and my good friend just gifted me a Phlizon PHGD-3000 LED COB light. I was looking at the PAR and PPFD values and it seems according to Phlizon, that the light I was gifted...
  9. ROCKO123

    Possibly OVERKILL but what’re your THOUGHTS ???

    I’m growing in a 2.5x2.5x60 tent. lighting: Mars Hydro TSW2000 distance: 18” from top canopy power: dimmed down from 305w to 250w Growing 2 Pineapple Express autos and 1 sour kush auto from growers choice. All 3 are super pungent and covered in tricomes. My question is.... I know the light is...
  10. P

    Which LED light should I pic?

    Hi! I planning to buy a new LED. I have to in my head right now Im looking for one with a good pricing. I was thinking about mars hydro tsw2000 and I saw a philzon cree cob 1500w. The mars hydro pulls 300w from the wall the philzon 320 and also the Philzon is cheaper by about 30-40$. Only...
  11. C

    Co2 In a tent with high light intensity or PPFD

    Thanks in advance for the help, and thank you to those people who have provided input in some of my other posts. I live in a desert climate. Warm in the summer and cold snowy winters. I have a 4x4 gorilla grow tent and during the summer I was exhausting through a carbon filter (due to...
  12. RainDan

    TIMBER PAR MAPS Now Available

    Hello RIU, We recently added PAR maps for our Redwood VS and 4VS models to our website (also attached here). These are 3500K models and all measurements are taken in a 4'x4' tent. Upcoming Fatty VS PAR map shortly as well. Thanks for your support and have a good day. Regards, Dan
  13. Kaplow23

    What's my PPFD and PAR?

    Hey guys, I have my frame and everything measured. Plan is to use x12 CXB3590 COB in a 40"x40" frame. x6 3590 at 3500k and x6 at 5000k. 2 meanwell drivers 320watts at 1.4 amps in a series of 6. It's for my grow tent which is 4'x8'. I've been searching forever and realized it's much cheaper to...
  14. ChiefRunningPhist

    (μmol/s)/(PPFD) with respect to Hang height

    Hey guys, I'm looking for fixture PAR maps and the μmol/s output for the PAR measurements taken. Doesn't matter if it's lensed or not. If you've a saved PAR map on your phone or computer, post it up, thanks! 1. Total μmol/s: 2. PAR map(s) Trying to asses real world correlation between PPFD...
  15. FermentedThought

    Hortibloom vs Scynce

    New to LEDs and these two companies stand out to me. Saw some good opinions, some bad. mostly claims that you can build something with the similar spectrum and intensity's for less. but I'm interested in something with a good size footprint (5x5), full spectrum, controls and timers, low heat. I...
  16. HydroGrowLED

    Umol/Joule - A Commonly Misunderstood Metric of Grow Light Efficacy

    There are a lot of members here who seem to distrust when I say that umol/joule is not a good indicator of how well a light can grow plants. Various members here have demanded I have my lights tested for these figures and recommended me to a company called CSA Group to do so. I have contacted...
  17. SlownLow86

    How much light do you really need?

    I've been doing a lot of research lately on lighting and came across a study that I would like to share and discuss with everyone. I am in no ways an expert in this stuff, but I am learning everyday. First, though, we need to define some terms so we are all speaking the same language. These...
  18. GaurdianofthedankestTrees

    LED Virgin

    Hey my dudes I don't know much and so here I am asking a few questions. I'm thinking of purchasing a 5x9 grow tent so first things first I guess that space will technically be reduced because I will have to leave space between the plants and the lights and also the lights them selves away from...
  19. O

    Seeking help/input building a new led-strip lamp

    I have previously been growing in a tent with a floor area of 1 m² under 8 x cxb 3590´s and 2x HLG-240H-C1750B drivers with potentiometers disconnected for max wattage and light levels. I´m now thinking of buying a smaller flowering tent, measuring 125 x 65 x 120 cm. I have been looking at...
  20. StonerPimpson

    Trying to put together the best ppfd Vero COB setup for a 4x4 tent.

    Like the tittle says Im trying to get as close to 1000ppfd with the vero COBs as possible in my 4x4 tent. Cost of the fixture is not a factor, I just want the best. Also, what type Vero is best for it (A/B/C)? Im doing a DIY fixture so if you could suggest the right number of COBs, type of Vero...
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