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you are right 25-50w per sqft is conventional wisdom but success can be obtained with less

Depends on what you want to do. 240 watt led would work great in a 3x3 and ok in a 4x4, same with a 315cmh. 1000w Hps will light up a 5x5 area.

Harvest the top 2/3 leave the rest bud and all. Some reveg fairly easy and others I have lost.

Lol thanks I needed this.

Yep, although I have mostly moved on to passively cooled lights, the active cooled with noctua is really quiet.

Noctua makes nice fans, mine have been trouble free for a few years vs constant trouble with cheapo 12v fans. I also agree that there should be a connector they usually just zip tie the wires into tight bundles. If you do have to cut I vouch for wagos because they are easy and reusable.

Just some stress. It should bounce back and look like mom eventually.

Cheeto paws

Retail style flood tables are also larger than the stated size. For example active aqua 4x8 is 4.45x8.43 lip to lip, making it impossible to fit 2 inside a 8x8 tent. As for ventilation if you hooked it to a roof vent or a gable vent the smell would blow away pretty good and keep your attic in...

I've have some AC infinity axial muffin fans that have been going for a few years. Ive used brackets or zip ties to attach to poles and have hung them with ratchet hangers with moderate success. Many of these type of rack mount or server type fans have MTBF of over 50,000 hours, which is why...

I would think you would be ok, if you are worried you can leave the lights on 24 hours for a few days. In my experience it takes about a week of 12/12 for anything to start changing.

TRICK

grain silo, tons of side lighting one really tall plant

potato chip / 10 great thread would read again

I like how everyone is a salesman except for the people using guerrilla marketing to get around proper advertising.

noice

Need to mix them with water, if you just combine them full strength they could precipitate and those may not dissolve in water.

I had trouble properly seating my cobs once. I had to get shorter screws as some bottomed out on pins, so be careful when trying to seat them as the screws are easy to strip or snap off if they are even a little too long. I also recommend thermal paste instead of the pads. I use arctic...

I worked on one of these once as well, it does have a separate 12v driver, but I also had to replace both fans due to failure. They also ran 2 drivers per cob, so that sounds right that you didn't use half of them.

There are some options from amazon, check out rapidled and horticulture lighting group.