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Agree with everything here, only i dont consider the gap to include green (550ish), its always high in white phosphor diodes, but cyan 475nm should definitely have a place in supplementation its just that it is impossible to find efficient diodes. I have 4 triple red supp versions im testing...

Try shorten flower schedule to 11/13 or 10/14. It should give you a few days less but you may have to up light levels a bit to not lose yield. Some people say gas lantern veg (12/12 with one hour of light in the middle of light) makes the plant jump into flower a little faster, havent tried it...

While i know that it may be a triggering statement but what is the proof that sunlight is the ultimate spectrum for buds? You could argue that its better than any artificial lighting youve tried and i wouldnt argue with you; ive seen some of our cuts grow outdoors and beat the shit out of indoor...

Nice reply and wow, frigging lasers! I defo relate to how time much time can be spent on helping people to put something together and how hard it can be to steer them into the process which means they themselves need to answer the question : whats the best alternative? It always depends on...

Thanks for a great post, exactly what ive been looking for. I recognize this a lot myself with diy led - asking what they want for design/price; answer being either "-Yes. Or "What ever is best". GReat to see someone describe the process cause pretty much everyhing in this thread is over my head.

Have you had any experience ordering directly from manufacturers as Samsung or osram? What type of MOQs do they offer on white midpowers and red high efficiency monos? Agree on samsungs; it went from buyers being very detailed oriented, trying to figure out physical signs on the diodes to...

Its up to one self to do the research. Hoping to test these out and few other ones aswell in a few months. I think both yes and no on the wide spectrum. If this was true then all outdoor weed would be superior to indoors and fetch a higher market price which is not quite true. I think yes, you...

This here post is one of those that i love that somebody had the idea to do: https://www.rollitup.org/p/12727580/ Since were getting into spectrum i think its a good thing to check out. Spectrometer placed under 1, 2 and then 3 leaves in order to determine what light was absorbed by the...

Well sort of. People generally agree that you can grow well with leds which was a miracle some years ago. Nowadays people dont argue which is best anymore but argue how to define best. Thats a setup that makes a lot of sense. Equal height lighting. We grow with leds pushed down fairly low...

The standard "full" spectrum growleds of the likes of SF, mars, pretty much every led of the market only covers 450-660nm well. Youll see some that have some near UV incorporated or far reds but it tends to be only the smallest smidgen. Par range is 400-700nm so that means the cover about 2/3rds...

Thanks for keeping me straight here, many of these datasheets i havent looked at for some time :) Do you know any manufacturer making a replacement alternative for the lm301h evo? To the best of my memory the dropp in cree version is using a 450nm photon pump.

Could be the clones just as well, even though the the genetic is same there could be some epigenetic drift: genetics losing their magic. If it was any other lights id be inclined to say go for it but dem sum expensive and really good lights. If par levels are the same my suspicions would not...

Is there a an external dimmer connected? Try disconnecting it, they tend to go bad and glitchy. If no joy: isolate the problem to light fixture or driver by switching driver with another one of your arrays. Driver should likely still be under warranty. If its the strips well then examine them...

Those 561Cs have really good thermal handling, iirc their thermal coefficient is even lower than the 301Cs.

Ok, the single bar style light? that should be plenty :) For those more "centre hotspot" lights 300w could well be a bit too much for a wide tent.

Increasing humidity without any heat input will always lower your temps slightly. In the same way increasing your temps will always drop humidity somewhat.

OP: plant is looking good but yes the leaves are a bit down but nothing major. Do all the girls drink/dry out the same? Or does the middle one drink slower? Its the centre plant and one would assume it gets a little more light than the sides. Have you tried switching up the plants so middle...

Looking very healthy :)

I agree, 30-35w is usually ok for a tent, maybe a little more in an openspace and remembering in the end its not the watts, its how the light is spread around the growspace. I cant remember the form factor of Mars TSL. Also, for anyone who missed it, do not connect anything Mars to the...

It may even be a bot overkill: autos get much more total light per day since they arent constrained to 12 hours in flower; if you ran 300w for 18 hours its the same total light as 450w during 12h. Keep it dimmed and look for signs for possible overlighting.