Hi good day fellow stoners,
I have been having big probs with various deficiiencies, P,K, MG, and iron tried everything I know of to rectify and have had some limited success then some of the said plants would die, yesterday I thought it was a ph problem locking out to be told its not that so I read and read to find out that its claassic symptoms of off gassing. I built the space myself and have lino on the floors for catching spills and diamond mylar on the walls and roof,I used no glues and pinned the mylar up with drawing pins so I wwouldnt poison the plants... does any one know if the mylar gives off or is it the lino???? also has anyone got pics of plants affected so that I can see if what I have happening to my girls. cheers guys

Have heard something, I think, about lino causing bad room syndrome

Yeah theres not much here about it or i cant find it but on a us site in between all the shitfest material the symptoms are yellowing like mg then going white like iron then as you correct for the defs you get a p and k looking def and then the plant shrivels up and dies like over ferted I didnt want to join so I couldnt see any pics, Think I'm gonna rip the lino up today.

Yeah, it's not just the nasty adhesives that can outgas, but certain types of lino, too.

Maybe line the area with some of that (usually blue) plastic tarp stuff instead.

Hopefully its the lino as I am at a loss to know what else could be doing it, my pots are also in black plastic (think they'll be polythene) greenhouse trays what are peoples experience surely it couldnt be them too....?

It won't be the pots, especially if they're 'horticultural-grade'.

¿Just 'suck-it-and-see', innit?

Better luck with your next batch in their modified environment - I'm sure that they'll be a lot better.

well done that.... no more lino albeit it was only on the floor, Im gobsmacked that a small amount of lino would do this to my plants but will have to wait and see how they react.......theres some good pics on the soft s@@rets forum if anyones interested which look to have exactly the same problem and symptoms... peace

i read on hear that some1 had similar prob nd it was the lino
get the lino out the mlar hould be fineas long as got real stuff heard about cheap ebay stuff gasin

thanks mate, Longshot but any ideas who it was.. or maybe someone may remember the thread I could compare pics and see the outcome....

Chipboard ply and fiber board are the biggest causes of formaldehyde leaching, they are bad for humans and plants.

Thank you ot1 there is none of that, Interesting point though, maybe this should be included in g/r design as a warning to members thinking about using lino or any of the products you mentioned, my box is built from "tanalised" wood for the frame and plasterboard to cover the carcass insulated behind with cellotex the plasterboard is covered with diamond reflective mylar.....its built onto a wall with the exhaust built directly into the chimney flue, there are no smells so dont need a cf,,,also I went to a boat cover maker and had some white canvas doors made with velcro to hold the doors over the opening ....only thing I can apportion blame for my probs is the lino that was on the floor, or can anyone see any other product that may be to blame....peace

What about vapours from the tanalised wood?

e2a. "Wooden products are often tanalised - impregnated under pressure with highly toxic substances such as arsenic"..."Due to the toxins it is advised that you don't burn tanalised timber!"

edit again "Tanalising involves impregnation with Tanalith E (new environmentally friendly) wood preservative under controlled conditions in a vacuum pressure timber impregnation plant."

bugger Ive used it to build the frame with BUT IT IS COVERED with plasterboard and mylar, do you think it could be the cause??/

can carpets cause it or painted walls ?

Get rid of the lino , and you will see improvment within 24 hrs .

I was pulling my hair out a few years ago when a ran into this problem . Luckily OG was still around and i found a tutorial in the FAQ section with pictures showing the exact same symptoms as my own plants . I d just built a new space and thought using new vinyl flooring (lino) would be ideal for catching any spills and be a doddle to keep clean . Trouble was , it was also ideal at killing plants !!

Last year when i seen pictures on gyps site from growers in the states having similar problems growing in various brands of grow-tents , it was obvious the plants were displaying the same symptoms .
Not many believed me when i suggested off gassing from the vinyl used to make the tent material , but thats what was causing it . Search around the other forums for more info . the manufacturers have since admitted there are problems with off gassing and offered replacements !!

pics showing symptoms from off gas

I d just built a new space and thought using new vinyl flooring (lino) would be ideal for catching any spills and be a doddle to keep clean . Trouble was , it was also ideal at killing plants !!



Hya Jonny, me too, new rooms eh, mine were way way worse than those because I was sorting out what I thought were defs which I had to give a week in between to see if it would rectify the problem starting with Mg then fe & s then ph as I thought it was locking out nutes, by that time I had lost a good few smaller ones and was left with mums with necrotic leaves and very near to death. now a week or so on Ive seen some improvement,greening up nicely, but as they were so critical I suspect another week before they start to grow again.

Hmmm, wonder if this has been your prob

I think its caused by the lino/vinyl/pvc products heating uo and releasing toxic gas which slowley kills the plants and if you feed with full strenth nutes you see them die over the next 24hrs

Hmmm, any idea what grow tent brands was affected by off-gassing? Say for instance a Homebox? I bought a Homebox a couple of years ago, one of the first models out there (got a good deal on it), and I've had my fair share of problems as well. Doesn't really make sense to use a material that will damage plants in a grow tent, does it?

Hi Lez

Hope your girls improve

I recently moved extraction fan and had to a hole into 2 inch thick kingspan

The said fan was on the floor lowest speed

Whilst i was working away the fans kicked in full power and spread kingspan dust allover the place

3 plants were not hit but the rest have spots on leaves

wont do that again !

hb

what about the fan ducting ya get covered in a black plastic vinyl PVC stuff ?

would laminated board that kitchen units are made out of give off gases? is it a problem if you're using household cfl's? or will they not heat it up enough to be a problem?

cheers

Well thought an up date was called for, having nearly lost all my babies, I tried and tried to correct defs which wernt there, then, waiting 2 weeks to see if i had sorted it and losing more and more to find out after about 2 months of trying different remedies the lino was to blame and to warn others of this problem. Horay now I am seeing the last frizzled leaves and all lush new growth so all sorted now a few weeks later....

Read about this a while ago on here, glad you're sorted buddy, good luck with the grow.

A polite #bump# to add my tale of woe.

Shit bugger and balls....can anyone associated with this thread have a look at my thread here I haven't used any lino, but read with interest the post from OT where he said chipboard, fibreboard etc is a bad cause. Well, this is all a new growroom, using fibreboard covered in reflective sheeting.

Bugger. It would seem a likely suspect then. Have a look at my thread, look at the pics and see what you guys think.