help?

[what372]

im using 3 100 watt fluorescent light bulbs. 20-20-20 fertilizer. brita filtered tap water. dunno whats wrong maybe ph levels or something. wondering if anyone can tell me the problem and solution. seems to be only the first two big leaves the rest of the plant is healthy.

[Wobster]

Seeing as your new and this is the first post I'll leave the sarcasm out :D

At the top of the plant problems forum theres a permanent link with a trouble shooting form. I know its a ball ache but fill it in. You wont get many responses until you do. Your post is like sending a pic to your doctor and asking him whats wrong with you.

Fill out the sticky and you'll get answers. Also... have a read of some of the other plant problems. You will soon find things that relate to your post eg, using filtered water instead of tap water.

[daihashi]

you are more than likely experiencing micronute issues due to your brita water filter.

Do not filter your water.

Here is an except from the FAQ on Brita's website


# Does the BRITA water filter cartridge remove all minerals from drinking water?

The BRITA water filter cartridge only partially removes the hardness from drinking water. This part is temporary hardness, which causes scale deposits during cooking. It does not remove all of the minerals from the water. It reduces the concentration of calcium and magnesium with cation ion exchange resins, but theses substances are not completely removed as in desalination systems or industrial plants that use reverse osmosis or distillation processes, for example.


# Does the removal of temporary hardness affect calcium levels?
Yes, but mostly in the form of temporary hardness or limescale which is not a good source of dietary calcium. This will not have a significant effect on the calcium intake of those on a normal diet.



If you're going to use a filter of any type then you will probably need to supplement with CalMag as a bare minimum to avoid problems.

[stinkyattic]

Those filters remove so little of the dissolved stuff- I'd doubt it's the issue.
I'd be looking at thrips as a potential problem- you see little larvae or tiny poops anywhere?
Also, the plants are in clear plastic bags? Hm... when you see roots, transplant IMMEDIATELY to a proper opaque pot.

[what372]

no pest at all check very thoroughly. ive did a little research and by the looks of it, i think it might be a magnesium deficiency. and the plant is way to large to transplant now those pics dont really do justice. couldnt i just cover the bag from the light?

[stinkyattic]

I can promise you that is not a magnesium problem.

[what372]

as you can see the the leaves are turning more brown kinda like rust looking color. umm still have no clue on to what a can do. the only good thing is its only the first two eldest leaves and doesnt seen to be spreading. wondering if i should remove the leaves? and what i can do to prevent this?

[Wobster]

Looks like it may be fungus to me. Maybe leaf spot fungus. Anyone else?

[phatsesh101]

yeah i was thinking fun gus myself id bet there is no or little air flowing through the plant

fill out the form

[stinkyattic]

Do you have any exhaust in there?
Edit: And you have not answered any of the questions asked in the thread. How are we supposed to help?

[what372]

i tried answering the troubleshooting questions but im a first time growing and no nothing about any of that ha. but ill tell you everything im using and everything i do. im using normal no name soil bought at the garden store, 20-20-20plant prod all purpose fertilizer 1/4 of the recomended dose. 4 100 watt fluorescent light bulbs. its in a clear plastic bag but the roots are covered from the light, (because to large to transplant) im using brita filtered tap water but then switched to normal tap water 2 days ago, i give it approximitely 250 ml a day. there is a fan in the grow room to help with air circulation and the grow room is my room in a basement with a air exchanger but not always on and far away. it get 18 hours of light a day 6 hours dark. thats about everything and theres plenty of pics posted if you need more ill be glad to post them. and also should i remove the leaves now? oh and its only two of the eldest leaves.

[stinkyattic]

What is your %RH and temperature hi/lo, both day and night?
You must have an exhaust. That could very well be PM and the damage from it. It is a fungus that grows in high humidity and likes cool temperatures with a swing down at night that is drastic enough to cause condensation on the leaves (dewfall). Even if it is not PM, it could very well be another type of fungus.
Go to wlamart and get a bottle of Serenade. Use as directed. It's safe and organic.

[Wobster]

On my second grow ( a closet grow ) I had air bieng vented in and out of the closet. The closet however was in a room that was not vented. So fundamentally I was circulating the same air round and round. I had a problem that looks a lot like yours and it turned out to be leaf spot fungus. I tried various things to tackle it but nothing killed it... only slowed it down. I posted pics on here so Im gonna try and find them so you can see. I also had fans blowing onto the plants.

What Im trying to say is that fans blowing on your plants will not ensure they dont get attacked by fungus. A constant flow of FRESH air bieng brought in from another room or even better, from outside AND air bieng vented out of your grow area is a much better way of keeping it at bay. It's also much better for your plants development.

[what372]

thanks, i will get vents right away. but will it spread and maybe die or should it be fine? and i dont know the temp like i said im a n00b haha its only my first grow just experimenting for future references.

[stinkyattic]

A thermometer costs like $5 and I find it hard to believe you don't have one around the house somewhere!!! Get on it! :D

[what372]

haha sure will next time ill do it right