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Hiya folks This may seem like a really silly question, but isn't there supposed to be a screw under the rubber protection for adjusting Io and Voltage? When i take off the rubber, it's a few centimeters deep and then there's a piece of plastic? Am i supposed to break off the plastic, and the...

Hey everybody A friend of mine wants to build a ~300w light for a 1mx1m scrog. It's going to replace a 400w HPS. He wants to keep it at no more than 300$, and wants to use cob's. So far I've suggested he take a look at Citizen 1212 and Luminus cxm-22, perhaps Vero22 as well. What do you guys...

Hey guys If i want to drive 8 CLU048-1818 chips at 50-60w each, what would be your suggestion for drivers? According to datasheet the Vf on the chips is ~52v. Ideally, i would like 2 drivers to power 4 chips each at around 200w, to a total of 400w. I'm having trouble finding any drivers for...

Hey guys. I'm currently engaged in a discussion regarding LED grow lights on a cannabis forum native to my country. The discussion is nice and sober, and everybody just wants to learn as much as possible. I have referred to this forum several times, but the language is a barrier for some...

As title says... I'd like to know if they're worth a damn lol. If you use these tents, or have used them in the past, then please pitch in here. Do they leak light? Is the reflective material ok quality? Etc. I'm currently using Secret Jardin DS60, and if the Mars tents are comparable in...

Hi everybody. I'm going to put up a UV-bulb for use in flowering, and I was wondering how long i should run it for each day? I have looked through some other threads, and a lot of people say a lot of different things... I will be using an Exo Terra Reptiglo 5.0 25w -...

Hi guys. I need a little help identifying the problem here. Growing indoor in soil with perlite. Plant is about 1 month old from seed, currently vegging under a Blackstar Ufo. Biobizz nutes, although so far i have only used fishmix in low doses N P K 5-1-4. I'm using tap water, which ought to...

As title says... This might be simple enough to calculate, but since i'm completely useless when it comes to math, i'd appreciate a little help from the very knowledgeable people here :) Tent size is 60x60x150cm, I'm running 4x CXB3590 (36v) 3000k 80CRI @ 1400ma, so 50-ish watt pr. COB. 1 driver...

Hi everybody! Well, as the title says... I've been reading and learning a lot from this and other forums, thank you Supra and all you other guys for pioneering this stuff :) ..anyway my head is just about spinning now, and before i order my COB's i need to know if there's any major difference...