If anything I would say that maybe that particular strain needs more light than the other beans you popped in there, to my not very expert eyes it looks like the plant needs way more light, the plant does not look deficient like you said.
Mine did that at about the same time as yours due to excess manipulation, however, I can see the tips of your leaves burnt and that means you are overfeeding which could probably add up to the cause of the early pistil discoloration.
My uneducated guess would be that certain terpenes are louder than others, my nose might not be very refined I guess yet but I usually fail to perceive the "gassy" terpenes in strains like sour diesel, it also happens to me with "cheese" strains and "earthy" terpenes.
However, I can smell...
My bad on the costs, to be honest I do not live in a country where... we are developed lol. Getting those QBs here is very costly, I mean VERY costly, like considering wages and currency exchanges and all, around 20 times more, no joke.
I have to disagree with you on this one sir, check it out it's like this: These leds cost me 13 bucks a piece and they last for around 3-5 years (yeah it's pretty low quality, they don't last much I agree, but what happens if one or two fails? you replace them... it's a very different story if...
Thanks bro.
Yeah I am pretty sure walmart just buys these off of some Chinese super low quality manufacturer that does not use efficient diodes whatsoever, I'm pretty sure these are the cheapest, less efficient diodes manufactured ever but they still pull out some yields.
Listen to this dude, he knows his hydro, like I said I grew hydro some years ago before moving to 100% organic but I never heard of using oxidizers, sounds very interesting indeed.
I don't think they are similar, Hydroguard contains Bacillus and is marketed as a "root inoculant" which has been proven quite useful for avoiding algae to grow over the roots due to warm water temps or light leaks on the roots, in my times it was either have a water chiller or use hydroguard to...