The Chinese Quantum Board Knock Off Builds

[PJ Diaz]

Or any of that. Autos just look weird to me.

There are some autos which are getting better and better. I'm gonna grow some autos this year, and prolly make some auto seeds just for fun.

Starting with something like this is a good way to go (yes that's an auto testing at over 26% THC, Saltwater OG):

 

[budman410]

To all new fotop buyers, go ahead with the trusted suppliers that different guys on the forum recommend. It’s been around 2 years and some of my boards have blown out diodes and the terminals are easily broken ..the quality difference in my Rita boards are clearly superior

 

[DukeFluke]

Canna hydro flores 5-3-10, PPM usually gets up to about 1200 in my DWC.
Cheers!

That's more likely your problem.

What conversion are you using? What's the EC?

 

[shiva71]

That's more likely your problem.

What conversion are you using? What's the EC?

Im a bit lost there, what is more likely my problem...?
I dont convert, I work with ppm as do 90% of dwc growers.

 

[UpstateRecGrower]

Im a bit lost there, what is more likely my problem...?
I dont convert, I work with ppm as do 90% of dwc growers.

There is the 500 and 700 scale. If you’re using the 500 scale 1200 ppm would be 2.4ec, that’s way too high..

 

[DukeFluke]

I dont convert, I work with ppm as do 90% of dwc growers.

Then it makes getting advice harder, because ppm isn't a universal measurement.
Find out if you're using the 500 or 700 conversion scale and then find out what your ec is. If it's 2.4, then you're most likely frying your buds, which is why I asked what you NPK ratio is, because they look full of nitrogen.

The ratio isn't bad, but at that strength, any nutrient can be damaging.

 

[Sleez]

I’m think about making my meijiu 240w leds into one fixture. I have 4 separate 240w led. But want to combine maybe 2 or 3 together. I was going to just use the drivers that it came with and just mount it to some aluminum. But I wanted to know if I could get one driver and connect all the boards together. So I could use one dimmer for all boards.

 

[zypheruk]

you should be able to wire the dimmer to control them all ok.

 

[Sleez]

you should be able to wire the dimmer to control them all ok.

So I can use separate drivers and just connect a single dimmer to control all boards? Each fixture has a dimmer. Could I just use one of those dimmers and take the rest off?

 

[Rocket Soul]

So I can use separate drivers and just connect a single dimmer to control all boards? Each fixture has a dimmer. Could I just use one of those dimmers and take the rest off?

You can get all drivers on the same dimmer, but not the one you got now. Youre probably best off using PWM but i think you could use a 33kohm dimmer pot for 3 drivers, but please make sure before you buy, there is a led dimmer thread around here with plenty of info. I think you could find it by using site search for "3 in 1 led dimming" or similar

 

[shiva71]

Then it makes getting advice harder, because ppm isn't a universal measurement.
Find out if you're using the 500 or 700 conversion scale and then find out what your ec is. If it's 2.4, then you're most likely frying your buds, which is why I asked what you NPK ratio is, because they look full of nitrogen.

The ratio isn't bad, but at that strength, any nutrient can be damaging.

Ok thanks i didn't know about this. If my ppm drops, that tells me my girl is feeding so i bump it up...if it rises that tells me she's not feeding and I lower it...sweet spot where it stays the same normally around 800. Thats how I've done it, seems to work...just lack of trichomes that bothers me...
Anyway...don't wanna derail the excellent thread
Cheers

 

[PJ Diaz]

Hello, guys, when they told you that their fixtures uses Sansung LEDs or chips, and I really dout that. Sansung didn't produce so much leds, how thay can get them? You guys said that Meijiu use Sansung led, you realy know how to recognize the real SANSUNG? Even the professional LED engineers can't do that by eyes. Hit me up to know what is the real sansung

I think you mean Samsung.

 

[PadawanWarrior]

I think you mean Samsung.

Maybe not. Ever heard of the Poly Station, lol?

 

[UpstateRecGrower]

Hello, guys, when they told you that their fixtures uses Sansung LEDs or chips, and I really dout that. Sansung didn't produce so much leds, how thay can get them? You guys said that Meijiu use Sansung led, you realy know how to recognize the real SANSUNG? Even the professional LED engineers can't do that by eyes. Hit me up to know what is the real sansung

Yup, we're sure.. And they're actually quite easy to recognize.. I used to have a comparison posted under my old account of the meijiu lm561c s6 3000k boards, close up macros of the diodes compared to the s6 and lower bins that I purchased from digikey and the only ones that matched were the s6 from digikey

 

[bk78]

A friend had some diodes go out on his almost 2 year old Meijiu strips, he contacted them and Rita sent out 2 new led strips 2 days after contact

Terrible customer service and lead times

 

[tommyinajar]

To all new fotop buyers, go ahead with the trusted suppliers that different guys on the forum recommend. It’s been around 2 years and some of my boards have blown out diodes and the terminals are easily broken ..the quality difference in my Rita boards are clearly superior

Is there a list or can someone toss 1 or 2 out here? I'm on the fence with a kingbrite or a Meiujliu 600w-I was looking at the octopus but will probably get the Kingbrite w cree(is that needed) it's like $400 cheaper shipped AFAIK

 

[budman410]

Is there a list or can someone toss 1 or 2 out here? I'm on the fence with a kingbrite or a Meiujliu 600w-I was looking at the octopus but will probably get the Kingbrite w cree(is that needed) it's like $400 cheaper shipped AFAIK

A list of credible suppliers? Most of us only use those 2. Or which fixture

 

[Rocket Soul]

R2T HK/ali supplier: I have a few friends who have bought from them and we're happy with what they got, afaik all boards still running. Ymmv

 

[DukeFluke]

R2T HK/ali supplier: I have a few friends who have bought from them and we're happy with what they got, afaik all boards still running. Ymmv

I was talking to them recently about some rock boards I think they're called. Which ones did your friends get?

 

[tommyinajar]

A list of credible suppliers? Most of us only use those 2. Or which fixture

Kingbrite KB-W55-L1100-600W LM301H with CREE XPE2 (IDK if cree is needed)
or
MEIJIU-A8-650W-V2,
(I guess they are only about $200 apart from what I found) These are my 2 best guesses of what I need.

I'm really getting mixed up trying to find a light on Alibaba -never really ordered anything over $5 on there before, I didn't want to hijack the thread with my novitiate. I'm not sure who or what to order- Tent's 5x5. I probably need a full spectrum but leaning towards maybe just a flowering tent. I've got a 4x4 text also - a 600w & 1000w hps I'm in the process of replacing (I never dreamed electric bill would go up that much)

- I've got a spider farmer sf4000 so far-so if someone can post or PM me a good seller link ships to the USA I'll buy a beer next time I see you