Recent content by tilopa

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    Why are Bridgelux strips so hard to find.

    Thanks Midnightsun and OSBuds.
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    Why are Bridgelux strips so hard to find.

    I purchased some Gen 3 strips and later some Gen 3 Thrive. And now I need to add to my build and cannot find any vendor who sells them. Digi-key and Future Electronics used to have them but now they are special order only. Does anyone know other sources? And what does that say about the...
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    Pros and cons of a perpetual flower room vs room where all plants finish at the same time?

    I have a 6 light flower room. Because my veg room is too small to grow all the plants needed for the whole room I split the room in half and run 3 lights first and then 4 weeks later start the other 3 lights. I'm considering expanding my veg room so that I can have all plants start and finish at...
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    Deleted Post

    post moved.
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    Led Temps - Air vs Leaf Surface

    Leaf temps are lower than ambient because the plant is transpiring and releasing water vapor through the Stomata which lowers the temperature at the leaf surface. VPD is not computed from the leaf temp alone, it is from both the leaf temp and ambient temp. It is confusing to me what happens to...
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    Coco perlite Hydro combination - Drain to waste with recycling nutes. How long before draining ?

    You are confused. Salts vs organics has nothing to do with the effects of different mediums. It's all about oxygenation to the root system. The air-filled porosity of a medium is the only significant difference between any two mediums. If you have a medium like coco that has a high AFP it will...
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    Coco perlite Hydro combination - Drain to waste with recycling nutes. How long before draining ?

    This is link to Bugbee's paper on the science behind recirculating reservoir. https://www.researchgate.net/publication/284231562_Nutrient_management_in_recirculating_hydroponic_culture
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    LED and Calmag issues.

    Is it clear to you from the graph that it is only 25%? Does it matter that the blue goes to 100% but the red never does? I know there is more red, but... On the other hand I just looked at the graph for the samsung LM301b 4k and it looks similar to mine. But there's is CRI80 not 90. And most of...
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    New HLG light - High CRI fixture - HLG 50

    Yes, but I guess I am doubtful about any SPD configuration with a lot of blue at this point. Actually, I don't even know if it is blue that concerns me. I have lights with higher blue and it is killing my plants. So, until it is understood what spectrum combination works I can't afford to test...
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    LED and Calmag issues.

    80f. I've dialed in my VPD to about 83 ambient and 68% RH and it definitely helped. Plants perked up, but they still droop after 14 hours of day, and mag deficiency still there. Honestly I think I'm fighting a losing battle. My lights are 4k CRI 90: I feel like there is just too much of the...
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    New HLG light - High CRI fixture - HLG 50

    Why would this be good for veg or preflower?
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    LED and Calmag issues.

    Not sure whether to dig up this old thread or start a new one. This was a frustrating read as I was hoping to find the cause of the problem, that I and others are having, but to no avail. My theory is that this is a spectral power distribution issue, which I believe translates to too much blue...
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    Help with a Led Strip Build

    When you say mounted bare how do you do that? What do you use to keep the strips together?
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    New HLG light - High CRI fixture - HLG 50

    What diodes are these?
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    Cheap driver for EB Gen 2?

    I'm trying to make a cheap seedling light with EB Gen2s, which are nice and cheap, but the only drivers I know will work are the expensive meanwell drivers. Looking for recommendation for cheap driver.
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