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30-45 cm should be adequate.

You can with EBs.

2-3 more weeks is my estimation. They also look like they could use more red spectrum at this stage. What lights are you using?

@CobKits

Bridgelux EB strips. If they are under-driven you won't need heatsinks. This is your best option, hands-down. :leaf:

Buy an ADATA flash drive, I have one that is 64 GB, and install the latest KaliLinux, Ubuntu, or any other amnesiatic Linux based OS. They are usually FREE and updatable, they usually have QBitTorrent already in the shell programming. This way you can boot any PC or laptop into Linux and...

I see what you did there.. :leaf:

Marijuana is dangerous. It drives pigs mad. They'll knock down your door and flashbang you out of fear and hate. People are murdered by police daily. I saw a police officer shoot an unarmed man in the back while he was handcuffed, face-down, on the ground. I watched as he drew his pistol...

With the right setup you should see 1.6 g/W. CO2 can push it up to 2

Either way, as long as they are growing marijuana I will support them. I wouldn't be alive today if it weren't for cannabis. Besides, how awesome would it be to see a field from horizon to horizon full of Mary Jane.

CO2 should be the very last thing you do, the startup cost to run it properly and the cost of CO2 or the dangers of propane burners makes it very complicated. 35W per square foot is the minimum, if you want to run CO2 I would use a minimum of 50W per square foot. Split the space into 4 squares...

Find a restaurant or bakery and ask for their 5 gallon buckets that they emptied, or buy some from the hydro shop. Drill holes in the bottom, place newspaper in the bottom, then rocks, then good soil with one third perlite mixed in. You can add a little vermiculite for water retention. You...

If you use only 3000K make sure you use the 80 CRI to keep the stretch down. Make sure to check out TastyLED.com, send an email to Kevin, he will be able to help you with any detailed questions you have and direct you to the option that will best suit your needs. That's where I'm getting all...

I'm using two 3000K and one 4000K to test. Check the colour spectrum chart. Plenty of red in the 4000K and a little blue in the 3000K. Adjusting both spectrums will help with the flowering transition, weight and frost at the end.

Fascists.

People still use HID? I thought Gavita was Monsanto bullshyte, you'll never see me with one. Or general hydroponics.. or botanicare.. or..

2x 600W should go fine in there, more if you can duct the lights separately. With the temps on the 80's I'd replace the HID with LED until winter time.

50+ g/sq ft comes to mind.