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Thanks Midnightsun and OSBuds.

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...

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...

post moved.

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...

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...

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

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...

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...

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...

Why would this be good for veg or preflower?

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...

When you say mounted bare how do you do that? What do you use to keep the strips together?

What diodes are these?

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.

Why should Chinese lights last less than the US name brands? They both use the same Samsung diodes and Meanwell drivers. The rest is just simple electronics. I liken the LED market right now to the personal computer market in the late 90's. Not long after you bought your first computer it was...

I just wanted to follow up and say that my plants are looking much better. New growth coming in well and they are all praying to the lights now. One cause that I have discovered was that my EC meter was reading too low. I have one of those cheap amzn pens, so I bought a Bluelabs Truncheon and...

I flushed earlier with .4ec. I'm going to start feeding them 1ec tonight slowly. I'll check the runoff. I'll try mixing some mother earth coco in with it next time.

I've lowered the power on my lights to around 8000 lux. The conversion I'm using from that Irish dude in youtube, seems pretty smart, is about 195 ppfd. Do you think 8000 lux could be way off of that? What nutes do you use?

Thanks for all the feedback. Yes, I'm realizing now that my nute solution is way too hot. Which is weird because with the Grodan blocks I can go north of 2.0 without any issues. However, I forgot to mention that I got the clones from an outside source so I dunked them with the nasty stuff...