Q boards and distance myth

[Benson123]

Just thought I’d let you guys now that you don’t have to have your boards at 18in in flower,mine are at 11in on full power and are doing great with no signs of burn at all.i have a par meter that reads 1020 lux at this height so imo the plants should be fine with the lights So close,I’ll keep yall posted.

[Ironman]

Just thought I’d let you guys now that you don’t have to have your boards at 18in in flower,mine are at 11in on full power and are doing great with no signs of burn at all.i have a par meter that reads 1020 lux at this height so imo the plants should be fine with the lights So close,I’ll keep yall posted.

Nice one Benson, I always put mine too close to quick, that's my problem lol.

I'm too keen to get them on full whack.

Out of interest, which Kelvin are yours? I have 3000k!

Sent from Thames Iron works

[Benson123]

Nice one Benson, I always put mine too close to quick, that's my problem lol.

I'm too keen to get them on full whack.

Out of interest, which Kelvin are yours? I have 3000k!

Sent from Thames Iron works

3000k mate,I don’t wanna make ppl burn their plants but it seems 18in is a little safe.

[Ironman]

3000k mate,I don’t wanna make ppl burn their plants but it seems 18in is a little safe.

I told a guy yesterday that I aim for 45cm (18") for seedlings. Then I let the plant grow to the light, slowly turning up the power. I must admit, I would aim for 18" during flower but that's because I have had issues that I put down to the light being too intense. Your light meter has proved me wrong though, I must get me one.

I didn't fry my plants at 12" but the top buds finish up much lighter in colour than some of the lower buds. The lower buds also seem to have more potency and flavour than the top nuggs.

I'm using 2 x 250w boards in a 1.15 x 1.15 solid cabinet groom, maybe my space is a little small for going too close?

What I mean is, my lights are probably 8" apart from each other so maybe my issue is, to much overlap of light and too much reflection off the walls, rather than the height?

I'd like to hear your thoughts on that please mate.

Sent from Thames Iron works

[Benson123]

In all this we are trusting my cheap light meter,it’s said that plants can’t handle light over a certain par,I think the optimal is 1000 lux but I can trust my eye and will be able to lift the lights if I see that its doing them harm,I think I am a little close,the plants aren’t telling me that yet but I think I will raise them to 14in,I would say that’s probably the sweet spot.my lights are about 8in apart,3 in a row.

[Ironman]

In all this we are trusting my cheap light meter,it’s said that plants can’t handle light over a certain par,I think the optimal is 1000 lux but I can trust my eye and will be able to lift the lights if I see that its doing them harm,I think I am a little close,the plants aren’t telling me that yet but I think I will raise them to 14in,I would say that’s probably the sweet spot.my lights are about 8in apart,3 in a row.

That's the way to play it. Do you use all 3 boards from the start or do you use 1 board until the plants are big enough to spread under the 3 boards.

I tend to start with 1 board at the lowest setting and then turn on the 2nd board when I take the humidity domes off (about 10 days from seed) then I start cranking them up.

I've also read that 1000 ?mols is the max for strong healthy growth.

Here's a some stats that I try to work towards. The top grid is the light spread of a migro 100, showing its intensity at 12" from the plant.

The bottom grid is the different plant stages and how much light is required.

Sent from Thames Iron works

[Benson123]

Interesting thanks man.i have 1 board over the cuts on full power at about 40in then lower the lights as the plants seem to take hold.

[kbag]

Yeh you have to be abit cautious with light as the affects can often take time to show weeks it can be. So i guess it is always better air on the side of caution as ironman said bleached buds are of poor quality.

[Benson123]

Yeh you have to be abit cautious with light as the affects can often take time to show weeks it can be. So i guess it is always better air on the side of caution as ironman said bleached buds are of poor quality.

Like I say I’m gonna take them up a bit to 14in,but I still think 18 is a bit high,if your plants are thriving.

[Ironman]

Yeh you have to be abit cautious with light as the affects can often take time to show weeks it can be. So i guess it is always better air on the side of caution as ironman said bleached buds are of poor quality.

My buds didn't really show signs of bleaching as such, well apart from a slight discolouration (Greyish)just before chop. I feel I probably degraded the THC quicker on the higher buds but as you you say, if it takes weeks sometimes, it may have been caused well before I even noticed anything.

I think Benson has it right in so much as he waits for the plant to take hold and then increases as he see's the plant handling the intensity. Nothing beats the human eye (except a ridiculously expensive par reader lol) @Benson are you in a tent? I know millwall has no walls to his groom for reflection, so he has to get his boards closer than I do.

What ever he's doing, it's working lol, his plant are sublime.



Sent from Thames Iron works