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And also..http://www.seoulviosys.com/en/technology/uvled/

CMH will not provide you uvb in a significant quantity....

Well...that is probably right...UVB change pigments...anthocyanin instead of clorophyll..and the first is less efficient regarding photosynthesis. I have experienced that increase in anthocyanin, but it occurs mostly at advanced maturation time and mostly in flowers and pistils...at leaves...

Try to not use UVB alone...mix always with UVA...Seems that UVA protects from some nasty effects from UVB.. For UVA peak reception...look at this graph...see what happens around 360-390

Think that if you are running UVA/UVB reptile fluorescent and they are a good brand like arcadia or solacure..you dont need to add more UVA leds...But if you like to do it anyway Best in UVB is 285nm and in UVA range for me are working nice 365,385.. I also add 410nm but is not really UVA ..is...

Nice setup

Those grapshs show a little UVA in the 385 nm aprox (black graphs)..but of course not UVB.... Is hard to find good UVB leds and they are expensive...This little UVA quantity can improve terpenes...but it seems that is very little...

This light has not UVB...And probably very little UVA...Dont believe this alibaba sellers...

Eat them now ..they are more potent when pinheads LOL!!! I used to grow this strain so long time ago........

21 days from flip. 285 nm Seoul viosys UVB 60 mw total 3 hours a day plus 365,385,410 nm all day during main lights on.

Splinter Z is easier to clean that dynavap....look in youtube for a review or video of use....There are several versions...Splinter, Splinter Z(US custom or chinese), Splinter V1, V2..more or less similar but the most powerful is the Z. Vapefiend sell it in Uk..also vaposhop I think. This...

After some learning curve...is like a portable volcano... Based in a 510 mod connection..is a portable pure convection on demand vaporizator....in my opinion (and others) the vap that gives the most similar experience like smoking... more body high than dynavap and others...check fuckcombustion...

Dynavap 2018 M was my main vap until the beast arrived one year ago...I mean the Splinter Z.... lol!!

Same happened to me..altought with other lights as Fr sources. I like praying also, but still trying to understand better the many roles Far red has... And still trying to figure the best red/far red ratios in every stage of plant development. right know i am adding far red all day even in...

Yes...I like the way you make those pics...so beautiful...

I dont know..I wish to know if there is even a correct amount of Fr....Petiole angle usually increases with added Fr...but this does not mean that you are using a "correct " amount...just that plant is reacting to that.. Some growers think that praying is not a good think , others believe that...

Praying is related to the amount of Fr...petiole angle reacts to Far red mainly

For me, the best is Led Tech from germany...high quality good prizes https://www.led-tech.de You should do a minimun DIY... but is easy

I am on the same opinion..right now using 285nm uvb and 365,385,410nm since young clones..just like in nature..at this moment 60 mw of uvb 285 2 hours 15 minutes a day, and 30 watts of UVA leds all day and plants at 10 days in flowering time...look very nice...sativas and indicas

Yes...I overdrive them a little until 150 ma..And seems to work ok..If you use them only 3 hours a day about one month and a half per crop..should last some years....I am using them in veg also cause I want to simulate the sun since the start...but is not necesary