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Interesting article for April's fools day.......

Here's what they show on their PAR map. I dont know how far away from the lights your plants are but maybe back it off a bit for now n see if they improve. For flowering you need 800 - 1000 so going by what they're showing 12" - 14" at 50% seems the ticket. It's a strange one their PAR maps...

Can the fixture be run at 250 watts and 400 watt settings too I wonder?

Up North of where? US, Canada, North of England, Scotland maybe? There's lots of norths lol.

Exactly

I use these. I got the heedchef future for Christmas, still haven't used it yet. The silver headchef xecellence is still going strong after much abuse! You'd need to drop these 20ft to dent them.

I thought the thread was about.... Lol

Definitely not light bleaching. Their PAR Map says at 24" with the light on full - 100 watts, reads 512 ùmols. You have your lights set at 50 - 60% at 22" - 24" away that's low light levels. You could raise your temperature up a bit if possible too. At around 12" - 15" would be optimum for...

I would be running them in the middle of the light cycle rather than at the start and end of it. Is it the ionbeam light bars? You haven't said how many bars you got. 4 I think. What do their instructions say re hanging distance and duration? That's how I run uvA. 26 watt Mantis led. ~ 4hrs...

Im at 55°N. Here's what I get on the 21st June, around midday. Unfortunately sunshine is a rarity in these parts. It drops quite considerably when there is cloud cover though Early July II'm running 1800 over some indoor plants at the moment just to see what'll happen. Nine days since I...

Get a long screw driver or a knitting needle or such like and stab lots of holes in the soil.

Ok y'all I took some more measurements about an hour ago. The HLG is running at 361 watts on the kilowatt meter. I was close at 350 watts The distance from the plant canopy to the light is 10" ~ 250mmm I said 12" Apogee Par Meter reads 1800 in the middle . Maybe @Delps8 you could...

Is anyone else running high ppfd? DLI is around 77. I'm still gonna leave it for a week and see what happens.

Very good information from @DanKiller & @Delps8. There are optimum conditions for growing but cannabis can tolerate a wide range of temperature and RH. I've been growing like this for years in my garage. I do know what I'm doing. I'm the growing in the cold expert lol I've a hut I use too but...

I normally run at around 800 - 1000 ppfd. I'm unsure of the wattage of light, - HLG 550R - it's dimmed a bit, maybe around 350 watts. Maybe ~ 12" - 300mm from the canopy. 15°C?, sure that's a spring day here. I've grown in cooler temperatures than that. RH is probably ~ 90.

I lent my par meter out a couple of months ago and only got it back this afternoon lol. I've been flying blind for a while. I tested the 4 x 4 tent. The plants are in flower. 12 on 12 off. No CO2 added Centre reading Edge Canopy temps ~ I'm gonna leave the light were it is for a while to...

Feck, I'm smoking it now! 2 phenos. 1st one, on the left in the picture smoke is very smooth with a quite racey high. 2nd one, on the right in the picture smooth is very smoke with high racey quite. I kept the pollen from both fems as they do appear to be a salad foundation to start a new...

Funny story. I had my electric doctored years ago but I never stole any lol. Cable run up the cavity to the loft but in ever bothered hooking it to lights. Years later I got a letter from electricity company that they were changing the meters in the area so I near shat myself. I'd to go on eBay...

You can clone the males too if you wanted.