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If interested I have 30 or so vero 29 gen 7s C's with holders/reflectors for sale, 1 year old, all work great. no heatsinks though. Ohh also have a handful of meanwell drivers to power them.

Get a vacuum pump, gauges and nitrogen tank and its pretty easy to install, have done 3 myself so far.. no leaks and working great after 2+ years. The electrical is easy if you are at all familiar with electrical work/installing breakers etc. I have 3 mini split heatpumps all from...

You don't need cal/mag unless you are using ro water generally, even then you may not need it, should be enough in base Canna nutes, that being said look into Jacks nutrients, WAY cheaper (like a ton) and have had excellent results. Jacks Hydroponic base, Jacks Calcium Nitrate and epsom salt...

The environment is great actually, this strain naturally has purple stems.

Ideas what is causing this on some of the leaves?

I have 5 ton ac and the 12 disc I linked above, sealed room, keeps humidity at ~70 percent no problem for me.

Yeah, that would be more than you need, get one of the smaller units, maybe a 6 or 9 disc, they work amazingly well, much better than other humidifiers I have seen.

He is looking for the opposite of that though.

This is what I use, works great, keeps a large room at 70-75% humidity without issue. They have smaller ones as well if you don't need to do 600-900 sqf room. http://thehouseofhydro.com/store/p88/12_Disc_Mist_Maker.html

I tried this, still has light going through, the inside of the ducting is reflecting the light through. I found a thread about making a light proof louver, going to give that a shot.

Just built my first quantum board light. I used 4 boards running at 150 watts each. I bought 2 36" x 8" long heatsinks running 2 boards per heatsink. I have it hung and lit up but was wondering what is the max safe temp? They do get quite warm.. I can hold my hand on them but gets warmer than...

Anyone have a design or know of something that will give me a light proof intake, need a couple passive intakes into my flower area but needs to be light proof. thanks!

C's are the most efficient, D's are the least efficient. Run them at 75 or 100 watts imo. For a 3 x 4 I would get at least 6 of them and run them at 100 watts each, or get 8 and run them at 75 watts each.

This ro filter is cheap and comes with a bunch of new carbon/sediment filters, works fine, I have a few of them, was getting like 7-10ppm our of it, changed the membrane to a filmtec for ~20 bucks on amazon and now 0 ppm ro water out of it. I use an ultrasonic humidifier, no problems with my...

If you run co2 you will want leaf temp at approx ~80-85 F and seal up your room so you are not sucking all your co2 out. You can exchange air a few times a day if you want, I do with my room. Run anywhere from 900-1500 ppm of co2, although I have read anything over ~1200 ppm is not very...

Peanut Butter Breath, super dense and frosty

The apogee 120 sensor does not accurately measure leds, you need the 500 sensor. Add 20+ percent to your par readings for closer to accurate numbers when measuring cobs. Here is a video on the different sensor, here is where they start talking about the ranges they measure, as you can see the...

Stick with the D's, they are more efficient even at 75 watts, A 9 cob setup running with 3 240 1050 drivers are a great setup.. will do better than a se 1000 hps without question. Generally about 600 watts of a quality cob, like a 3590 or vero 29 gen 7 will be equal if not better than a se 1000...

The 133 mm from northerngrowlights and vero 29 gen 7s at ~75 watts each are 120 F at its hottest point for the few fixtures I have with them running at 75 watts. I have some running at 100 watts each on the same heat sinks with a 50mm fan attached and are 104 F at hottest point.

Ahh did that see they were back in stock, nice