Search results

Why do you believe they are "the best"? How are they better than Nichia's dual-chip NF2W757H-V2F1? Because Samsung says so?

The forward current is almost linear, but the forward voltage varies a bit more. Once you multiply forward current by forward voltage to give overall wattage you can see how much more efficient the diode is at lower currents in terms of lm/w or umol/j. 100% luminous flux at 150mA and (let's...

I wish someone would do that for us! Sadly every time we design an LED fixture we need to go through every single type of diode we are considering using and calculate the umol/j to work out how efficient they will be which determines which diodes we end up using. The problem is that the...

I don't believe HLG ever made a Quantum board in this configuration. If you are referring to a Chinese knock-off then you will need to know exactly which diodes were used, ie; CCT, CRI and forward voltage bins. If you take the time to read the link I posted you would be able to work out the...

Start here: https://www.rollitup.org/t/math-behind.868988/ You need to digitise the SPD then work out the efficiency by dividing lm/W by LER, then multiply by QER to give umol/j Here's an example: LM301B CRI90 3000K LER = 297lm QER = 4.92 SG bin = 31lm @0.065mA and 2.75V = 173lm/W divided by...

I know it's not the answer you want, but all the info you need is in the datasheets. Easy to find, easy to compare. The problem is when every company claims to have "top bin" Samsungs how do you know who really has them? The datasheets only tell you the theoretical highest bin. They don't tell...

They can be purchased individually.

The pots won't dry as fast so you have to rely more on the plant taking water up.

IR penetrates the leaf and warms water molecules under the surface increasing the overall leaf temperature.

For the same wattage no, because it takes more electricity to make a blue photon than a red photon, so watt-for-watt there will be about 1/3 fewer blue photons than red. However, those blue photons will carry about 50% more energy than each red photon (comparing a 400nm blue to a 600nm red)...

This is a known issue and has several causes. LEDs do not emit much infra-red (heat) especially compared to HIDs. This means there is less leaf transpiration but it also means pots don't dry out as fast. LEDs are great in summer and warmer climes, but can be challenging when temperatures are...

I see you are after something for a 4x4. There are a couple of options: A 500W Quad here: https://growlightsaustralia.com/product/high-light-420-gen2-470w/ Or 2x 370W Longboards here: https://growlightsaustralia.com/product/high-light-420-longboard/ If you live outside Australia, then the...

Hey sorry for the delay. I just saw my name mentioned! Can I help with anything?

Here you go: https://growlightsaustralia.com/product-category/buddies/

Mate, that's quite a production line you have going! It's very ambitious! I'm sure all the growers will do you proud.

Nice lights mate. Do please let us all know what you're using. You know I have a vested interested in these grows. It also looks like someone has been in here since last night to clean up the mess. Glad to see things are back on track. :weed:

A few hours left for the lucky few . . .

Sales has begun. Use code For20%Off in Cart or at Checkout for 20% off all store items, including Specials and Bulk Discounts. Take another 10% sales tax off if you live outside Australia – that's up to 40% off on some items. 48 hours only. Ends midnight (GMT+8) April 21

Sorry to spam the thread, but FYI the code is up on the site now: For20%Off

We're offering 20% off store-wide for two days. A discount code will be posted up at www.growlightsaustralia.com at midnight on April 19 (Perth time, GMT+8 ) and run for 48 hours. The 420 code can't be used with other discount codes, but store-wide discounts will apply to Specials and Bulk...