2x2x5 Grow Lab - Reserva Privada Headband ... [ 100w T5 veg / 250w HPS flower ]

It's somewhat true.. Spray the foliage under direct HPS and let it sit and you can get some burns..


Though I don't spray my foliage whatsoever in flower... UTA any ideas on the burn? I'm flushing this morning anyway.. Looks like backing off the heat helped a bit though

upthearsenal said:

Lol, don't listen to that^

If that were true, consider what would happen in nature if there was rain and the sun were out............

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Be a little more relaxed, it can happen if the rays focused on a stomata.

Did most of the burning start at the tips? To me it looks like overfeeding. I guess flushing is your best bet.

Has the problem stopped, or is it getting worse?

upthearsenal said:

Did most of the burning start at the tips? To me it looks like overfeeding. I guess flushing is your best bet.

Has the problem stopped, or is it getting worse?

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Nah it started everywhere, really fast... Began with copper specks towards the ends of the leaves, then moved back to the stem of the leaf.. on the bad leaves the leaves burned up completely and curled up towards the HPS..

When I was pushing the nute levels 25mL Tiger Bloom 30mL big bloom I noticed that the tips started to burn (nute burn) so I backed right off the nutes... started doing feedings like 10-15mL tiger bloom 10-15mL big bloom every other watering as a response..... everything was good, then 1.5 weeks of plain water, I left for 5 days, and came back to this..




extra notes:
I am also starting to yellow naturally, I'm used to this... i'm noticing a few leaves here and there with them getting a very slight hint of yellow.. Just as a grow note.. This is separate from the burning though. A natural response to being late in bloom...

If this is a 70-78 day strain I'm looking to chop in a month. Or less than a month.. Very exciting. A few pistils are turning brown. The frost is really nice.

Sr. Verde said:

Nah it started everywhere, really fast... Began with copper specks towards the ends of the leaves, then moved back to the stem of the leaf.. on the bad leaves the leaves burned up completely and curled up towards the HPS..

When I was pushing the nute levels 25mL Tiger Bloom 30mL big bloom I noticed that the tips started to burn (nute burn) so I backed right off the nutes... started doing feedings like 10-15mL tiger bloom 10-15mL big bloom every other watering as a response..... everything was good, then 1.5 weeks of plain water, I left for 5 days, and came back to this..




extra notes:
I am also starting to yellow naturally, I'm used to this... i'm noticing a few leaves here and there with them getting a very slight hint of yellow.. Just as a grow note.. This is separate from the burning though. A natural response to being late in bloom...

If this is a 70-78 day strain I'm looking to chop in a month. Or less than a month.. Very exciting. A few pistils are turning brown. The frost is really nice.

Click to expand...

Yeah, the TB can burn for sure. I haven't used it in a while but 30ml seems crazy, maybe not though. I would have just kept the solutions at around 15ml if it were me, but again I haven't used the TB in ages. I also subscribe to notion that less is best.

C.Indica said:

Be a little more relaxed, it can happen if the rays focused on a stomata.

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Be a little more relaxed? It's hard to be more relaxed when one is already totally dabbed out.

I've actually talked about this with scientists and grad students from a&m. There is actually a lot of debate about this, but it is still considered a myth. There was some Hungarian scientist who tested it out, and we all know that droplets are in fact mini magnifying lenses, but what people forget is that water evaporates pretty quickly under intense sun. Anyways, in the Hungarian's test he showed that smooth leafs won't burn, but leafs that have little hairs on them (like cannabis) can hold a droplet up above the leaf surface and magnify it. Although he never got one to burn, this was just a theory (that a droplet, suspended would potentially magnify) based from an observation, and I think his main conclusion (it's been months since I read this) was that leafs wouldn't burn under intense sunlight was because the droplets would evaporate, simply put. One concept that you always arrive at when discussing this is, "if that were true what would happen to plants in nature, or humans for that matter", which is why I tossed out that thought experiment, although it seems like it was in vain.

Didn't want to jack the thread, I just felt compelled to throw that out there. I try not to say something unless I have some substance to back it up, I don't always post everything on my mind, so sometimes it can come out patronizing, although I'm usually just high and laughing my arse off.

you do know though that there has to be clouds in the sky for it to rain? so the sun might be out a bit?.....

I'm not entirely sure what you mean Devils love, but yes I do know that there has to be clouds in the sky for it to rain. By the "sun might be out", do you mean out and about, or out of view?

The conclusion to the only scientific study done on this was basically, the sun will evaporate the droplets before anything could potentially happen.

This isn't what caused Sr.'s problem, so hopefully we can just get back on focus... and speaking of which, it would be cool to get a shot of the plant(s) affected without HPS, if possible.

Day 45 flower

Flushed with 3 gal plain h2o... balanced to 6.6&7.0&7.3


The runoff started at 5.8.. then by the time the third gallon was done it was at 6.03...

The plants look pretty much the same, they might have some nutrient shit going on but I think it was mostly burn from the lamp.. Looking at the damage, it seems only the exposed parts of leaves were severely burned.. the parts covered by extra leaves were fine.. and the damage was only the worst directly below the bulb.. Though I think the flush will do the roots some nice... When I started the run off was brown, when I was done it was mostly clear with a tint of brown. I'm thinking I flushed out a lot of excess bat guano and worm castings? That shit was really acidic to my solutions maybe it was doing a little the same to my soil?


Oh well I only think these headbands will do well from now... The flowers look 100% healthy and vigorous.. Now with about a month left. Some trim leaves will be damaged but its still useable for hash oil .

upthearsenal said:

I'm not entirely sure what you mean Devils love, but yes I do know that there has to be clouds in the sky for it to rain. By the "sun might be out", do you mean out and about, or out of view?

The conclusion to the only scientific study done on this was basically, the sun will evaporate the droplets before anything could potentially happen.

This isn't what caused Sr.'s problem, so hopefully we can just get back on focus... and speaking of which, it would be cool to get a shot of the plant(s) affected without HPS, if possible.

Click to expand...

I'll touch on the water spray thing just to add a little input:
idk about where you guys live but out here water in the sun is a big problem for little plants like tomatos and peppers, strawberrys etc.... you have to water at night or at the break of dawn.. To give the water time to evaporate, otherwise the sun is intense enough to cause burns on the leaves. They don't do a whole lot of harm besides make the plants look like shit and maybe cause a little stress.. It wont destroy leaves but it will make little burn marks..

Granted this is in 110F weather, no clouds in the sky.

Verde looking good buddy!


Overall i just think it was a mixture of not watering and potentially higher temps... maybe one of those days the temp sky rocketed for one reason or another, who knows, shit happens.


Cant wait to get a solid report on it buddy!




BTW, now my Ti and Quartz nail are both well seasoned i can honestly say that the Ti nail def wins on all levels...


1. It it will fit in any piece.
2. Heats up just as fast if not faster(considering how thick it is).
3. It stays hotter longer(Am able to get 2 dabs off in one heating).
4. Will last forever(maybe not forever, but for a long time no doubt).
5. Taste increases by 1.5x in my opinion.

Yeah I love Ti too.. i have an 18mm and a 14mm...

You guys should see these plants.. ill take some lights off shots tonight... the next month will be fun they are yellowing out..

phelps you got any plants?

Word that's legit, i just have the 18mm V3 at the moment... Im lucky, due to the fact that taskrok is local and a friend of many friends i was able to get my nail for $75 vs. 95$ that they normally go for.



No i fucking wish bro, i feel like im living vicariously through you on this one! I have 650watts of hps/mh lighting, a 470cfm inline fan(with sound box built around it), soil, pumps, reservoirs, nutrients, seeds, etc.

I could grow, im just scared to be honest. When im sober, the idea sounds GREAT! When im stoned i cant stop being super paranoid about it and thinking about how id never last a day in jail.

Essentially i know id be fine, the paranoia just get's so bad that i cant even enjoy the high not really making it worth it at the moment.



Did you by chance ever get to see any of my grows? I cant remember...




I got some hella dank seeds to! Og ghost train haze, essentially it's a cross between Ghost OG(thought to be the original OG kush cut), Arcata trainwreck, and Neville's Haze





I got a 6 pack of regular seeds, im going to breed the best male and female once all is said and done, ill be sure to send you some seeds if you'd like. Probably wont be for a min, but i dont expect you or myself to be going anywhere..

Nice! You should grow some normal plants under those lights then.. Like peppers or tomatoes..

Cant wait for the pics!!

Sr. Verde said:

I'll touch on the water spray thing just to add a little input:
idk about where you guys live but out here water in the sun is a big problem for little plants like tomatos and peppers, strawberrys etc.... you have to water at night or at the break of dawn.. To give the water time to evaporate, otherwise the sun is intense enough to cause burns on the leaves. They don't do a whole lot of harm besides make the plants look like shit and maybe cause a little stress.. It wont destroy leaves but it will make little burn marks..

Granted this is in 110F weather, no clouds in the sky.

Click to expand...

Actually we don't grow pepper, tomatoes, or anything like that here in the summer as it's waaaay too hot. The tomatoes won't blossom and the pepper pollen becomes sterile because it's too hot. We usually wait till October or so to start the seeds, so they can be placed out in September. But yeah some plants don't like water directly on them, but that's why we water at the base

In my experience the best reason to water outside during cool hours is best because of evaporation, my area has been in a drought for a long time so water conservation is important. In my veggie garden I have a drip system so I don't waste a drop, so to speak.

Ive thought about it actually! Try my hand at some hydroponic strawberrys... Mmm Bet those would be good

Glad I found this thread, starting up a GL 60 in 3 days.....old phototron user here.....This thread WILL be my BIBLE, great advice from upthearsenal, love the zip tie/screen setup and like your nutes notes.....awesome stuff......BRILLIANT !!!!!!!

Hey Verde. I was looking around and I know everybody says this, but Are you feeding any Mag or Calcium? It seems to be a common problem in soil grow. As well It isn't absorbed under 6.5 PH and with this lockout usually comes with copper spotting. As well when Mag is cut out other nutrients can't be absorbed. Or if your ph is good, lack of Calcium can cause Mag lockout. Viscous cycle if you ask me

You obviously aren't a noob grower, just make sure you can get that PH where it needs to be. Dolomite lime as a top dressing could help bring your PH back up if it is too Acidic.

titycaca said:

Hey Verde. I was looking around and I know everybody says this, but Are you feeding any Mag or Calcium? It seems to be a common problem in soil grow. As well It isn't absorbed under 6.5 PH and with this lockout usually comes with copper spotting. As well when Mag is cut out other nutrients can't be absorbed. Or if your ph is good, lack of Calcium can cause Mag lockout. Viscous cycle if you ask me

You obviously aren't a noob grower, just make sure you can get that PH where it needs to be. Dolomite lime as a top dressing could help bring your PH back up if it is too Acidic.

Click to expand...

yep i add cal mag... keep ph at around 6.6 for solutions... calibrate my meter weekly.. and my nutes have ca / mg in small amounts too

thanks though it sure did look like a mg deficiency though im pretty certain it was the lights as is was mainly directly in the bulbs hot spot and not in the cooler spots in the canopy... the canopy is at 74F during the day now