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I've got two double heatsinks with V2 boards, and two double heatsinks with Diablo boards in the same tent. You don't notice a huge difference between the two sides when you run higher light levels because you're getting diminishing returns with more light anyway. They really shine when you're...

I just snagged a couple 240H-C1750AB drivers from TME. They came really quickly.

Just raise it up a little and there will be less dropoff in the corners. The most efficient hanging height for QB's always destroys your spread, so you have to hang them a little higher unless you can afford to cover the entire space in quantum boards... which I absolutely recommend doing. I...

You're absolutely right, it's heat stress. There is actually no such thing as light toxicity, as long as you have the correct CO2, VPD, etc. you can go to 2000ppfd if you want. If you had a bad environment and too much light you would see tacoing and twisting of the leaves to reduce...

You could flower in that tent at 120w

I like running my drivers dimmed down a bit, just so they aren't as hot and (in my mind) last longer. I also use 2x as many quantum boards as are suggested for my area because they are more efficient when they're dimmed down because they run cooler. I'm not sure how much you need exactly, but...

HLG has lux to ppf conversions on their site for most of their boards, but not for the diablo or bspec yet. I asked here if anybody had the conversion factor, but nothing yet.

I don't think thermal paste is going to help. The limit is the heatsink's surface area, not thermal conductivity. You'd be better off spending your money on fans. Then again, I am using the 240w driver because it's better to just buy twice as many boards and heatsinks and run them softer.

For the last couple weeks you definitely have to drop the N and raise the K, but for the majority of flower you should have 20-10-20. Jacks hydro has something very similar on their feed chart. And their cannabis specific nutrient is 18-8-23 (Jacks Outdoor). Dr. Bruce Bugbee says 20-10-20 as...

About a week after I started growing in coco I went out and bought a flood and drain tray and built a table with a condensate pump under it to get rid of all the runoff. It really is a lot of water to deal with. I also set up an automated top-drip watering system because it's just not possible...

Does anybody have a lux to ppf conversion for the V2 Bspec or the QB648? They're not listed on HLG's site.

I want free lights too, ban me!

I already have four V2 boards that should be the same voltage, so I could just use them together and then get 4 more boards for my other driver. That way I could upgrade to V3 boards for the new one. I might actually just get new drivers anyway because 1500 PAR across a 5x5 is not the worst...

I got one of those gro-dan trays that lift the rockwool plugs up off the bottom of the tray so they get better airflow. The grid of the tray also traps humidity around each cube (they're only open on the bottom) which promotes more roots sticking out of the cubes. I always thought it was a...

Sounds perfect.

I've got a 260w kit (240h-C2100A) and I want to run four boards on the driver instead of just two to increase my efficiency and spread. As I understand it four boards would put me outside of the constant current range for the driver, so I'd have to wire a combination of parallel (to both...

The QB18 supplement strips contain 3 different colors of red, including far red.

Purple Punch clone is rooted and going in a solo cup now. Looks like I already broke a couple root tips. Oops.

You could still breed that trait into photo offspring. Since autoflowering is a recessive trait, you can basically take your pick of offspring from a photo crossed with an auto and it'll probably be photo dominant.

If they are rooted already just leave them, but next time you take cuts do it that way.