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I was editing the previous message regarding distribution..Yes distance about 25 cm to top of the canopy..and as I wrote , the distribution like the dots in the four side of a dice aprox in a square meter tent

Yes, you are correct I used the four seoul viosys leds at 150 ma....a little more than the suggested 100ma..but the still not at the maximun current recommended.. so 15 mw per led.. 4 leds..60 mw 3,5 hours day ..but this schedule started at 30 minutes in veg and slowly ramping to the 3,5 hours...

Well,... I used 285nm seoul viosys led 3 hours and a half maximun with 60 mw output.. But also I used all time when lights on 365,385 and 410nm leds about 30 watts per square meter at flowering time. I used UVB since Veg , but increasing slowly exposure to the maximun at flowering time.

Talent at work!

FR use for EOD has to be used differently according with the strain your are growing... 14/10 for long sativas is too much flowering time....10/14 for short indicas is too short time to have decent yields...Best for me is the reverse 14/10 in short flowering indicas and 10/14 or even 9/15 in...

Nice info and nice plants, Your plant colors and general experience with your UV lights are similar to mine except I have been using instead uvb leds (285nm) and uva leds (365,385,410..this last one is near UVA..). I used UVB/UVA from seed too, also reach a point were bad symptoms start to...

Never heard about this UVB tube...it has a very different spectrum graph than solacure...seems quite potent in the UVB range..be careful with over exposure...

Dont say that!!!! lol!!! I was a big fan of growmau..... I watched his youtube channel since lot time ago....and when he partner with chillleds.. ..and his round table talks... and when he had nice talks whith greengenes,,,Dont know why he stop his work with leds... I miss his talks... life...

Nice fixture seems you have all covered..main base light..deep reds, Far reds, extra blues, UVA and now UVB. Good job! nice and clean Regarding your question ..I am on the opinion we should use them even in veg...but only few hours...and them increase it slowly until peak flowering time when you...

I have seen other people doubting about migros equipment too...

Well..I guess that starting with 3 hours a day and increasing 1 hour a day until 10-12 hours.. could be a good approach...but you must find it for yourself...just watch for signs of UVB damage in case you give too much UVB or your plants do not like it for whatever reason... I mean bleaching...

30 mw per led of 285 nm is quite potent...maybe a problem for light distribution in 4x4 and 3x3 tents...but very interesting for larger spaces and big plants...

For a 4x4 use two 14% arcadia 115 cms 54 watts each one .I would start using them in veg 1 hour a day..then increasing until about 4 hours at time of flip..then increasing until 10 -12 hours last weeks of flowering...anyway each strain is different..you should find the exact time in your...

For a 3x3 I would use 2 arcadia 14% 85 cms long https://www.arcadiareptile.com/d3-dragon-lamp/

For a 4x4 think you will need a little more... 4 in a 3x 3(mine) is in the limit

Fluorescent is a cheap and easy correct way to go..I have an high uvb arcadia tube also ....But I wanted to be strictly on leds...just a personal decision..fluoros are ok and probably easier to deal with...but better solacure and then arcadia....other brands not so good

That curing nails market is benefiting us for sure....

Is not easy to find them...I even have to sign a customs form that stated that I will not use them for military use... Trump things! LOL! They run at 100ma with 6 volts.. 10 mw output but I run them a little higher at 150 ma.. 15 mw output so they are about 0,6-0,9 watts This brand is the best...

Well I was thinking in their UVB leds...I built myself a lamp with their 285 nm leds . This brand is the best.. althought Rayvio has some nices ones at 280 nm. I bought the seoul viosys in star form... it in digikey..sadly there no more avalaible now...

Sorry ..but Philips Agro bulbs do not produce any significant light in the UVB (280-315)range...look at their spectrums . Nothing at the 285 nm which is the most important frequency inside the UVB range...the one that acts in the UVR8 receptor...