180w Blackstar LED in GL60 tent Organic soil (First grow)

fourtwentyish

fourtwentyish

Member
Just went to check and get pics of the LST actually in the pic. The above pics are from when I took the original off before I put it back on. When I was checking them, I noticed the tips of some of the lower leaves were turning yellow/brown. I am thinking it may be from them not getting as much light but I really have no clue what is causing it. Looking for help, if someone can tell my why the leaves might be doing it, I would appreciate it.

IMG_20110326_215406.jpgIMG_20110326_215505.jpgIMG_20110326_215457.jpg
 
fourtwentyish

fourtwentyish

Member
That is weird since all I have been feeding them is fresh aerated distilled water. I just added some more soil to the top but I wouldn't think that would cause burn. I will have to keep an eye on them. It is still just the one plant but I just checked on them and it seems to have gotten a little worse. Thanks for the input though! I would but up a creek w/out a paddle w/out all the help.
 
fourtwentyish

fourtwentyish

Member
Hudsonvalley82 said:
Whats the soil or runoff pH? That could also be a factor
Click to expand...

After doing a thinking on it for a bit and doing a bit more research I thought it might be this also. My pH meter doesn't work to well unless the soil is really damp though so I will have to wait till my next watering to check. Should be in the next day or two.
 
Hudsonvalley82

Hudsonvalley82

Well-Known Member
when you water try to catch the run off water in a container after it has been draining for a minute or so. pH test that. Distilled water (especially aerated) can be acid as the carbon dioxide in the atmosphere that is being bubbled through causes carbonic acid in the water, which is a very weak acid, but an acid none the less.
 
Hudsonvalley82

Hudsonvalley82

Well-Known Member
Those tips aren't so bad, if it isn't getting worse I would just lay off the feeding for a cycle or two and let them go. Nothing crazy going on there.
 
fourtwentyish

fourtwentyish

Member
Well I watered them and checked the pH. It was between 6 and 7 on both plants. Really close to 6 on one maybe 6.1 or so. The other was more like 6.4 or 6.5. The smaller one is starting to have some discoloration as well. I'll get pics posted shortly.
 
fourtwentyish

fourtwentyish

Member
Mixed in a little molasses when I watered them yesterday. Still haven't given them any nutrients at all. I swapped out the cfl I had with a 200w equivalent. I have no idea what the coloring on the leaves of the small plant are from. The big plant still has a couple yellow tips but it doesn't seem to be getting any worse. Anyone that knows what those coloring spots are and could clue me in would be greatly appreciated.
 
Hudsonvalley82

Hudsonvalley82

Well-Known Member
That could be a lot of things...I would hate to steer you wrong, I could say it looks like a deficiency and to add some N or K, but that could also make the problem worse. Sometimes that happens to me if I let my plants dry out a bit too much, it usually occurs on the lower leaves only. If it doesn't get worse I wouldn't mess with it, if it continues, seek further help.
 
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