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None personally. I am just judging by how veg is under 3000k and 3500k. Considering how much more blue 4000k has, it will grow very tight plants. My old blurple LEDs had less blue in them and my plants were VERY compact. A 4200k CMH/MH doesnt have as much blue relative to the other...

Ah okay. Was just making sure. For a veg tent though, I'd rather save the money for the cob/heatsink and just use 4 instead of 5. Uniformity/efficiency isnt that important so you'll be saving money and getting nearly the same results. And I agree, check out the cmx22s. Either those or i would...

They go up to 70 watts a board, but even at that you might want a bit more light for a 4x4' (6x 70w = 420w or 26.25w a square foot) If you cant find any QB120s (check amazon), you might be able to get a small driver and run 2x qb132s with the 6x qb 120s. Cant use the same driver though which...

Yeah it is. Although I see some people use it upside down and put the strips inside of the channel instead of on the bottom of it and they're cutting their 120 degree beam angle off haha. I might order a bunch of it to build some more lights. The heatsink i used is much better, but i think i can...

Yeah, this is solid info. Optimal is simply evenly spacing them and making them cover as much of the tent/grow area as possible for max uniformity. If you want to figure out the intensity, which can be tricky with DIY LED because of all the variables, get a lux meter and convert lux to PPFD...

Yeah I am thinking doing something similar to my current strip build (in my sig) instead of using a slate heatsink to get better spread and penetration. I have 10 2 foot strips in mine and the 1" heatsink was only $60 to my door. U frame would have been half as much. The 1" heatsink works really...

Yeah that would be fine for a veg tent, but if you wanna be safe I would get an HLG-320H-C2100A and use 4 COBs so you have 320 watts to work with. That way you have plenty of headroom and if you wanna flower using it you'll be good. It doesnt cost much more than the 240h-c1400b but you'll get a...

Phresh is the way to go for filters. The cheaper ones on amazon like ipower don't work well. I had the 4" ipower carbon filter (4x12") and a 4" exhaust fan in a 2x4 just like you and some strains would smell a LOT on the exhaust end. Like a LOOOOT. Piece of shit! It was brand new when it did...

Didnt see it was 20 amps. Anyways, ive just read a lot of reviews and feedback from people who have owned some of those ~$100 variacs saying they often lack safety protection features, and go pop quite often without overloading them at all. Some apparently are also poorly wired or even wired...

Is that feet? I would make sure the plant is in a corner and you paint the walls white or use panda film, or better yet throw up a $100 vivosun grow tent (they're the best tent in the price range). Having reflective walls will increase your yields substantially (maybe even as high as 50%) and...

I really think the vortex fans are worth it. 10 year warranty is nice too. I will never go back to cheapo exhaust fans after using one of the S lines. My 6" 347cfm vortex S line ($120) is half as loud as my old 190cfm 4" $45 ipower fan, it weighs less, it is much higher quality, is easily...

Is it a 3x3 tent or a 4x4 tent? In a 3x3 tent, 12-18" in flower and 18-24" in veg is what a 315w CMH should be at. In a 4x4 though, you need more spread so run it at 18-24". A 315w CMH really wont cut it in a 4x4 though, you'll get pretty small buds. Getting a lux meter will help. You can...

Good choice. And yeah, 4-5 cobs will be plenty for a 2x4 veg tent. I would use 4 cobs and drive them hard for 300-400w and run them high off the plants for better diffusion. My 320w samsung strips are 500PPFD 3 feet away so you could run them 3 feet away and have plenty of light for veg. The...

You could do a 750w samsung f series build for about $700-800 all said and done, including shipping. And it will 100% replace a 1000w DEHPS in yields, grow better quality bud, and use considerably less electricty/generate less heat. I also built an overkill 320w f series strip LED build for my...

I would never use 6500k cobs, even in a veg only tent. It's just way too much blue and you might find that your plants are too compact and might even see morphogenic issues. 3000k is great for veg, though my blurples grew more compact than 3000k for sure. 3500k is perfect for veg, and maybe even...

Nice setup dude. My friend has a 2x2.5' gorrila tent and just started growing again (he was an outdoor grower before) and he has 2x 150w HPS lights but wants me to build him a samsung F series strip light for it after he saw mine. I dont blame him. How much did you spend? He is looking to spend...

Vortex fans are a really good choice dude. I would use the 8" in a 5x5 tent, i dont think the other replies here realize it is lower CFM than other exhaust fans. But seriously though, I have a 6" vortex s line fan and it is the best fan I have ever used. You DO NOT need to build a box around it...

I'd rock a 630w DE CMH over a 1000w DE HPS. Yields will be a bit lower (closer to single ended 1k HPS) but it would be much more manageable and you'll grow way better quality bud. I think you can use a 630w DE CMH bulb in the AC/DE hood from sunsystems too, so you can aircool it no problem. Plus...

All my CMH buddies use cheap CMH lights. The philips bulb is a must (because of the double jacket) but the hood and ballast can be cheaped out on. Worst case scenario is the cheap ballast causes the bulb to burn out too fast. I'd at least look at second hand CMH setups off craigslist and what...

Lol why would anyone pay $320 for a CMH 315w light when you could build a 320w LED light for the same price and BLOW the cmh out of the water edit: I know op is just doing it for comparison sake but damn.... I couldnt justify spending more than $150-200 on a CMH I mean shit, you can get a top...