The Chinese Quantum Board Knock Off Builds

[Airwalker16]

you are sure that increasing the temp this problem ends ?

Positive. Add cacal mag too if you aren't already.

 

[Rocket Soul]

Positive. Add cacal mag too if you aren't already.

You can also try to lower RH a bit to get them drinking right. But raising temps will do better.

 

[Kenpark]

ok .... I try to increase the temp from 77 to 85 ...
Have you tried increasing the pH of the solution?
soil solution ...

 

[chuckduck]

Good advice. I don't usually zip up the tent all the way and have a huge fan pulling air out of the tent. I can easily slow it a bit. I'll start monitoring the temps in the house. Doesn't get colder than 68 in the basement though.

 

[Rocket Soul]

ok .... I try to increase the temp from 77 to 85 ...
Have you tried increasing the pH of the solution?
soil solution ...

Youre better of raising temps little by little, and watch youre youre plants react, body language.

 

[mastrmasn]

I’m looking to jump into boards. Really need advice A to Z. Especially with the alibaba ordering process and best sellers. I hav access to drivers and heatsinks. Just need boards looking to cover 4x4 flower. Help please.

 

[Rocket Soul]

I’m looking to jump into boards. Really need advice A to Z. Especially with the alibaba ordering process and best sellers. I hav access to drivers and heatsinks. Just need boards looking to cover 4x4 flower. Help please.

s15@mei9led.com: Rita Fang @
https://meijiuled.en.alibaba.com/

my goto advice on 4x4 (if you have access from all sides of the tent or have a way to raise/lower a 3x3 feet fixture) is running
3 x FoTop lm561C, 3000k 80cri, (about 80$ each+shipping and customs) on a
meanwell HLG480h-48A. dont buy it in china, get it from somewhere you can easily claim warranty, no international shipping.

you wont need a kit or heatsinks, these boards run fine up to 200w each. 2400 diodes!

 

[semaphore]

I’ll be biting the bullet and getting the NaLite grow bar to try out, will get the 800 watt version.

Ordered arriving in about two weeks, will report back here with pics and firing up.

 

[growingforfun]

https://www.ebay.com/itm/led-grow-light-Quantum-board-288Pcs-LM301B-3000K-254pcs-660nm-36pcs-Meanwell/332987298153?_trkparms=aid=555018&algo=PL.SIM&ao=1&asc=20180306143914&meid=deeac8408d3e4478a964b55ecc94019b&pid=100935&rk=10&rkt=12&sd=192509696799&itm=332987298153&_trksid=p2349624.c100935.m2460
What do yall think about these?

You gotta select the option for the light.

 

[WeedSexWeightsShakes]

I’m surprised more guys haven’t tried the light bar fixtures. They seem like the spread would be way better.

 

[charsi420]

https://www.ebay.com/itm/led-grow-light-Quantum-board-288Pcs-LM301B-3000K-254pcs-660nm-36pcs-Meanwell/332987298153?_trkparms=aid=555018&algo=PL.SIM&ao=1&asc=20180306143914&meid=deeac8408d3e4478a964b55ecc94019b&pid=100935&rk=10&rkt=12&sd=192509696799&itm=332987298153&_trksid=p2349624.c100935.m2460
What do yall think about these?

It's cheaper on Aliexpress - https://www.aliexpress.com/item/led-grow-light-quantum-board-LM301B-288Pcs-Chip-Full-spectrum-240w-samsung-3000K-660nm-Red-Veg/32957263985.html

 

[growingforfun]

It's cheaper on Aliexpress - https://www.aliexpress.com/item/led-grow-light-quantum-board-LM301B-288Pcs-Chip-Full-spectrum-240w-samsung-3000K-660nm-Red-Veg/32957263985.html

Asking about the light itself more than the price but thanks for lookin out. I'd be paying 220$ each not whatever it's currently listed at

 

[charsi420]

Asking about the light itself more than the price but thanks for lookin out. I'd be paying 220$ each not whatever it's currently listed at

Existing 288 users could pitch in about the lights. I'm looking too. If you haven't already, check options on Alibaba as well.

What I did notice though is, on eBay the seller mentions SK bin but when I asked him on AE, he said his stock is SJ bin.

 

[charsi420]

Also eBay listing says XPE for 660nm whereas when asked, he said Epistar.

 

[Airwalker16]

Ordered arriving in about two weeks, will report back here with pics and firing up.

It's cheaper on Aliexpress - https://www.aliexpress.com/item/led-grow-light-quantum-board-LM301B-288Pcs-Chip-Full-spectrum-240w-samsung-3000K-660nm-Red-Veg/32957263985.html

So what is the actual voltage of these? 85-265 AC? What's the forward voltage?

 

[its.always.420]

Is it better to use AC or DC muffin fans on the heatsinks? Can either/or be wired in with the power supply?

 

[Airwalker16]

Is it better to use AC or DC muffin fans on the heatsinks? Can either/or be wired in with the power supply?

DC on a small APV-12-12 meanwell driver.

 

[semaphore]

So what is the actual voltage of these? 85-265 AC? What's the forward voltage?

AC100-277, no idea on Forward voltage.

 

[Airwalker16]

AC100-277, no idea on Forward voltage.

That's pretty frigging important. Where's the voltage listed?

 

[semaphore]

That's pretty frigging important. Where's the voltage listed?

Sorry, but I just already told you the voltage range of the power supply. If you want specifics best you message the vendor. I'm not actually sure what you're ranting on about and for what purpose.