Cutter Electronics: Complete DIY COB kits

[Humble grower]

Four would be better of course, and you could dim down actually if you don't want the full 928 ppfd in that area.

You wouldn't need that much for cooling purposes, I'm not sure how much we want minimum for fresh air for the plants though. I pump heat into the grow room still, house is too cool to get that ~80℉ we want under the canopy. But I keep the fan up for smell.

You can go cheaper if you source yourself. Or running slightly lower efficiencies. 4 x cxb3070 at the same watts as cxb3590 still puts a ppfd of 830 in that sized space. Or running cxb3590 at higher wattages, 3 x cxb3590 at 63w each gets that same ppfd of 830 for 189w through the leds instead of 200w with the 4 x 3070s. Lotta different options.

How do you calculate the ppfd for these cobbs? I'd like to know what I'm at with my 8 cxb3590's in a 4x3

 

[Atulip]

Led watts * efficiency = par watts, par watts * QER = PPF, PPF/sq meters = ppfd of a specific space.

Assuming 50w per.

400w * 56% = 224, 224 * 4.65(3500k 80cri) = 1041, 1041 / 1.12 (12/10.7(sq ft to sq meters)) = ppfd of 929 for a 4'x3'

 

[Humble grower]

Led watts * efficiency = par watts, par watts * QER = PPF, PPF/sq meters = ppfd of a specific space.

Assuming 50w per.

400w * 56% = 224, 224 * 4.65(3500k 80cri) = 1041, 1041 / 1.12 (12/10.7(sq ft to sq meters)) = ppfd of 929 for a 4'x3'

Thanks they are about 50 watts. I appreciate you taking the time to get back with me

 

[Humble grower]

can you advise your order ID, I will check
Cheers
Mark

Hey Mark can you please check on my order status #20243 when you get a chance thanks I appreciate it

 

[Diskokobaja]

i need your opinion on this? http://www.todogrowled.com/gb/led-grow-lights/8-led-grow-light-tgl-220.html

i read somewhere that heatsink is too thin and the driver on it isnt best thing..

 

[Airwalker16]

i need your opinion on this? http://www.todogrowled.com/gb/led-grow-lights/8-led-grow-light-tgl-220.html

i read somewhere that heatsink is too thin and the driver on it isnt best thing..

Who's opinion? I just posted an answer to this exact question you asked in the other thread.

 

[Diskokobaja]

diy people coz its a question of heatsink fatness and placing the driver... not the quality of leds.

 

[welight]

Hey Mark can you please check on my order status #20243 when you get a chance thanks I appreciate it

No worries, this should be shipping first thing Monday
Cheers
Mark

 

[Humble grower]

No worries, this should be shipping first thing Monday
Cheers
Mark

Good stuff thank you sir

 

[OrganicGro]

yes ok got it, its packed and will ship monday, sorry for delay, we had been waiting on some more 90 cri chips as I was short a couple, thanks for your patience

Did 20029 ship?

 

[welight]

Did 20029 ship?

yes packed and waiting for DHL. Need to advise you I have upgraded you with two new Pairui drivers that we have been trialling, these come with adjustable output current option, but in all other respects identical to the normal driver which we have also shipped 2 of, so hope you like these.
Cheers
Mark

 

[goofy81]

The coupon code doesn't seem to work anymore.
I really wanted to buy it last week but didn't have the cash. now that i do.. Can you please do me a deal mark?
OH Nevermind, it didn't apply to the X1 kit.

 

[Humble grower]

Mark I see the kits are on back order any idea when you will have them back in

 

[Humble grower]

I started a journal if anyone wants to check it out

 

[BuddyMoor]

So I take it that 1400 ppfd would be too much. Right?

 

[Airwalker16]

So I take it that 1400 ppfd would be too much. Right?

Without a HEAVY CO2 supplementation, yes.

 

[MrTwist1]

So cutandroll discount is finished? @welight

 

[Rayne]

So cutandroll discount is finished? @welight

Only for the items that are on Back Order.

 

[welight]

So cutandroll discount is finished? @welight

no still current, what product were you looking at?
Cheers
Mark

 

[MrTwist1]

no still current, what product were you looking at?
Cheers
Mark

Huh weird. I was looking at solderless triple 660nm photo red XP-E x5 and LDD-700 to run them. I also need a small power supply, but the Meanwell RS-150-48 seems a bit overkill for my needs... you got anything smaller like RS-50-48? cheers