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  1. MrFlux

    Step into my grow room

    They are 60 cm long, 16 cm wide and 14 cm high. The volume is 9.5L. They are from Elho and cost about 3 euro. The small pot size works because of the living soil inside. The beneficial fungi have turned the soil into a tight sponge-like mass that would not even need a container any more: It...
  2. MrFlux

    Step into my grow room

    Small update of the cab this morning 20 plants flowering in a 4x5 grid. Blue Dream day 47F on the left, then a blue dream day 2F, then a C99 day 13F and on the right a blue dream day 40F. The big blue dream This thing is top heavy. The flavor and potency is already there and I plan on...
  3. MrFlux

    DiY LED - Cree CXA3070

    Thx for the correction Guod. If XP-L has the same die size then it's a bit disappointing.
  4. MrFlux

    DiY LED - Cree CXA3070

    The graph nicely shows that XP-L has less current droop (from better process/design) but also a worse I-V diode characteristic (from smaller junction area). From eyeballing the curves the two effects roughly cancel out, giving XP-L and XM-L2 about equal efficiency. Speculating a little, it seems...
  5. MrFlux

    Multichip LED, Remote Phosphor - Guess who it is.

    For full closure can you tell what size RP it was and do you know the temperature it had when running?
  6. MrFlux

    vero 29 questions

    No that's a constant voltage driver and what you need is constant current. For example LPF-60-48, LPF-90-48 or LPC-60-1050. These also come in a dimmable D versions.
  7. MrFlux

    The disadvantage to mixing warm white with cool white

    Gaies used that 1:3 mix as well. It's spectrum is nearly identical to the glorious Vero 4000K
  8. MrFlux

    The disadvantage to mixing warm white with cool white

    IMO just through every light you have at your plants...
  9. MrFlux

    The disadvantage to mixing warm white with cool white

    This was the closest I could find. The blue action spectrum seems to be very similar for most plants though, just like the McCree curve. Okay. Let's choose from the CXA3070 group, lowest CRI, highest bin. So it will be 3000K AB bin vs 4000K BB bin. They cost about the same on Digikey and seem...
  10. MrFlux

    Step into my grow room

    It puzzles me what sort of configuration you have if you measure 76.6V. That looks like 3 soft running Vero 10's or something. The Meanwell B model should indeed be running at full 100%.
  11. MrFlux

    The disadvantage to mixing warm white with cool white

    The width of the blue peak is kind of typical compared to other white (and blue) LEDs so that's not something to worry about. It has proven to work very well. Some slight hairsplitting is the location of the blue peak, at 455nm. The blue action spectrum has a local dip there which means that...
  12. MrFlux

    Step into my grow room

    Looks good to me. Your Tc gets 44C above ambient, that's a bit better than what I get. You T-bars are 50x50mm and mine are 30x30mm so that might explain. When you get some air flowing along the bars the temperature will drop a lot. This will improve the efficiency of the light by a few percent...
  13. MrFlux

    The disadvantage to mixing warm white with cool white

    That goes for monochromes too, not sure what your point is. My point was that it's just as efficient to get your blue from whites as from monochromes.
  14. MrFlux

    The disadvantage to mixing warm white with cool white

    About the mixing of whites, I can think of three ways to look at it. 1. When mixing whites you put a little bit more phosphor on some LEDs and a little bit less on the others. Like CH said you could have put some in-between amount of phosphor on all the LEDs to get the same effect. 2. Using...
  15. MrFlux

    The disadvantage to mixing warm white with cool white

    The blue light from white LEDs is the portion of light that didn't get absorbed by the phosphor. There is no efficiency loss really, it's just as good as getting the blue from monochromes.
  16. MrFlux

    DiY LEDs - How to Power Them

    For what it's worth I've seen what you describe with some older clones that were kept severely rootbound. The roots can keep the plant fed at lower irradiance but start to come up short when the light increases. No idea if that applies to your situation.
  17. MrFlux

    top bin leds

    Wow that is not a smart move considering how easy it is to find his real identity. His horse must have kicked him in the head or something.
  18. MrFlux

    DiY LEDs - How to Power Them

    Smokey do you give extra magnesium (and calcium), they need a lot with so much light. I think red stems are normal and clawing is N overfert.
  19. MrFlux

    Step into my grow room

    I use glue clamps. The t-bars have the ideal shape To squeeze out excess glue I move the vero's around a bit with the clamps on. Soldering is done afterwards when the glue has set. The connection pads of the Vero are thermally insulated so there's no unwanted cooling to the heatsink when...
  20. MrFlux

    Step into my grow room

    Here is a group shot of the third harvest. It has been curing for some weeks now. Total yield is 410.6 gram, a tiny bit more than the previous grow. An additional 40 gram was lost to bud rot :cry: The biggest tops of both Blue Dreams and one ICE had botrytis growing from the inside out, at the...
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