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Hence why I posted it!

So 2am is the sweet spot around here.. good to know! I’ve been turned off by the lack of replies mid day. Glad you guys are getting something out of this convo! I’ve been doing this a really long time and I thought that the days of posting on forums and getting anyone to read was over! I used to...

Let me also point out that flower prices are plummeting while utilities are constantly rising. If you want to be profitable in this game, spend the money on the gear; not the expendable Nutes, media or utilities!!

No. A 315 Cmh covers a 3x3 to as much as 4x4 area, but I’d personally rock 3 over a 4x8. It’s only 945 Watts with great coverage. I’ll be trying the iluminar 315’s and 630 duel bulbs soon enough for some myth busting. Stay tuned Exactly what I just said! Thank you!

Utilities prices are only going UP! In order to make a living in this industry, you need to keep your utility costs down as well as your expendable costs on media and fertilizer. As an EX Advanced Nutrients tech rep, I can tell you that Jack’s or Maxibloom will be your best friend! (That or...

You can pay now for efficient gear or later to your utilities co.. fuck them! Pay now and it only hurts once!

Yeah I can wait to pop 15#+ off 4590 watts of lighting and 1800w of AC. Talk about maximizing gpw per kWh! The real benefits from these QB’s is that these lights naturally kill the stretch dead in its tracks so you can STACK!!! Imagine a world where OG’s don’t end up 2-3x as tall and not needing...

There’s quantum board kits too. Think you can get 640w versions that would exceed a 1k DE in performance with the temps of a 600w HPS

Absolutely. Actually.. better!

Yes but you’d need 3 or 4 per 4x8 to do it right. Initial investment could get spendy. I see some true 1000w cmh coming soon that would require 2 per 4x8 and would smoke a DE setup

It wasn’t around back then. This is from 2005-6. Insulated ducting was pretty new in 6-8” diameters back then. The 3/8” thickness of the 18” PBT rigid duct collars collars we made insulated pretty well. With 450cfm per 3 lights and virtually no bottlenecks, this room ran pretty damn cool...

Definitely! Iluminar makes some dope ones that I can’t wait to try!

https://horticulturelightinggroup.com/products/hlg-550

I’ve run upwards of 28000w without FLIR protection in East L.A with choppers flying overhead 20x a day. Chill Holmes!

Like I said, I’m trying the HLG 550’s that I’ve seen as cheap as $850 that draw 510 from the wall and produce about 1200 PPF @1760 btu’s. That’s comparable heat to a 430w HPS with the output of a 1000w SE

Open windows are just asking for trouble. If you want to vent outside air in to your sterile grow I’d punch an 8” hole trough the wall or cut a board to size of the the center window and run duct in the room with dust shroom particulate filter on the end of the duct and an 8” high output fan...

COBs are cool but I think quantum boards from HLG (same as Johnson grow lights) Is brighter and more efficient. I’m about to test 9x HLG-550’s in a modified shipping container, which I’ll start a thread here about very soon.

Just trying to help!

Johnson grow lights maximizer is a 9 COB fixture in an air cooled reflector.

Thanks! With elite genetics back in the day when this was done we got a P a light lol. Those are cool tubes with clear pbt plastic collars I swaged on to the tubes with a heat gun. 2 rows of 3 and 1 of 4 made 10kw the fastest room I ever built, hanging 3 lights at at time!