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I wouldn't spend the extra for accurate PAR unless I was serious about R & D. I use the previous (foot-candles only) model of this:

Seems like something I'd break.

I can't think of a helpful insult right now, sorry. Edit: you might have had more of a response in "Hallucinogenic Substances"

I've been using one-hit bowls on bongs and bubblers for about 45 years. About eight years ago I changed from plastic bongs to glass-on-glass ground taper bongs. At that point I stopped using metal screens. Instead, I take some sugar leaf from a bud freshly removed from the jar/package. I...

Not in my experience with HLG and HBG drivers; model A is just as adjustable, sometimes a bit more so by spec. The A model uses name brand pots so I expect it will last long enough for the life of the driver. I bought A's for streamlined assembly and appearance but I might buy B's next time...

Sounds good. I just use bleach and prescrub with Simple Green or algae slime killer (forget the name). I posted to note that we don't want to use bleach and peroxide at the same time (I know you knew that). Edit: I gave up on enzymes and now run a sterile bleach nute res (for mapito). Edit2...

Thanks for reminding me to throw a baseball cap in the grow room.

Dang, I saw Logic ban Uncle Buck just for being Uncle Buck (occupational hazard, I guess).

Judging by the % cannabinoids on the WA state labels (especially concentrates), the numbers have very little to do with impediment (unlike alcohol).

I'm just finishing my first COB grow and the leaves are blasted out yellow. Due to external circumstance, I wasn't really into doing this round. It's my second grow using mapito. I ramped up the nutes to soon and had N toxicity, then I underfed the plants for too long. I turned on all my...

They look like the San Pedro my friend has grown for years. He used a worn out 1000W MH lamp for much of that time. The tea I tried wasn't very strong and gave me a slight stomach ache. I think dosing a bunch and then vomiting would have been more of a trip.

I've never expected purple stems to go back to green. Purple stems never stopped me from super cropping them.

I've never run CO2 but some people say you need to dump the air every 24 hours because xylene gas (as I recall) builds up. My room runs on outside air exchange so I'm of no help to you. Being in Seattle, I bought a dehumidifier but it has never been used. I run a swamp cooler type humidifier...

Room is sealed with no outside air exchange?

Sorry for my impatience, rocho. The Mean Well drivers I've seen, HLG and HBG varieties, have a little more adjustment capability than the listed specifications. For example, an HLG-80 adjusted all the way down to almost 50% of full current when the spec says it will only go down to 60%...

"So on hbg-60 sn't there any "end of scale" for dimm at full power?" Look at the spec sheet. The Mean Wells usually put out a little more but the ends of the pot adjustment (on a -1400 model) is 910 ~ 1400mA. It sounds like you're complusive so you can use the multimeter method but you're not...

The current can be measured with a multimeter but you need to connect the meter in series with the COBs. Youtubes can show how to measure current directly. I estimate output current indirectly by using a Killawatt meter on a 120VAC circuit and subtract the fan (if present) and driver losses...

I used a credit card to spread and a lot stays on that. I wasn't going to CPU type thinness because the heatsinks have varying amounts of waviness. But good point, thinner is better.

Not a happy ending (so far). https://en.wikipedia.org/wiki/Rollen_Stewart "Stewart is currently serving three consecutive life sentences in prison on kidnapping charges, having rejected a plea deal of 12 years in order to spread his message in open court." To answer the poll, I never cared for...

The HBG-100 series will bolt onto the Mega heatsink as you say, there are tapped holes for both the 98mm HBG-60 hole pattern and the 113mm diameter hole pattern of the HBG-100. The HBG-100-48A would be my choice for 36V COBs. The A model's internal pot adjusts current from 1.2 to 2A. The...