HELP!! Plant Problems..

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mmaaddmmaann

Active Member
so here is the deal, Some of my leaves are displaying huge brown spots and discoloration. They are also not growing in height, only in girth. I'm re-posting this with better pics. my food was at 500 ppm, I just did a two day flush with clean water now i'm at 200 ppm. Under a 600w MH hydro / aero system. 5.8ish ph. What's wrong do you guys think? and how can I correct the problems.
 

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Bubba Kushman

Well-Known Member
How often do you change your water. If you change it once a week the warm water temps dont seem to have as much of a affect on the plants.
 
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mmaaddmmaann

Active Member
hey guys, I use tap water for the grow, however, I have had a few grows with the same water and no problems. I suppose I can just drop some ice in my res once a day to help cool it down. I change my water about every two weeks normally, but lately it's been one week to try to keep a balance. I just checked, and have now changed my nutrient balance from almost even across the board (General hydro micro, bloom, and Grow) to a more aggressive grow formula (more grow half micro and just a smidgen of bloom) I was thinking the stunting might be from a phosphorus deficiency. I'm also now trying a 30 min on 30 min off for half of the day watering system. Am i making too many changes? is what I'm doing not going to help, whadda you guys think?
 
wayne85

wayne85

Active Member
hi lads its been 7days now since i potted my cuttings there growing and looking all good but some of my leaves are yellowish any suggestions
 
diggitydank420

diggitydank420

Well-Known Member
You're using tap water, eh?

You are most likely experiencing a Magnesium deficiency caused by high concentrations of calcium in tap water. Add about 1-2 teaspoons epsom salt per gallon of water.

Don't expect those leaves that are already necrotic to get much better looking, though. New growth will stay green.
 
diemdepyro

diemdepyro

Well-Known Member
diggitydank420 said:
You're using tap water, eh?

You are most likely experiencing a Magnesium deficiency caused by high concentrations of calcium in tap water. Add about 1-2 teaspoons epsom salt per gallon of water.

Don't expect those leaves that are already necrotic to get much better looking, though. New growth will stay green.
Click to expand...
There is the answer.:clap:
 
wayne85

wayne85

Active Member
cheers pal.. yeah im using luke warm tap water and feeding em bio grow nutrient there looking great and growing its just the little yellowish leaves i was worryin about
 
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mmaaddmmaann

Active Member
alight, thanks for the info. I'll bring em down to about 150 ppm, I'm moving my light up a little higher, and I'll buy myself some epson salts to have around just in case. Thanks for the suggestions, I'll re-post in a week after making some changes.
 
smokeybandit22

smokeybandit22

Well-Known Member
also important as the others have mentioned is res temps. 60-65 degrees will hold almost double the dissolved 02. should never go above 75 and never ever never go above 80. That with high ppms will fry your plants like they are starting to. U can tell when they are getting too much before nute burn begins as the large older fans will really darken to a deep green and not the healthy lighter green seen on the new growth. some strains more than others. the easiest way to bring the temp down is to set up a fan blowing over or into the res-will lower up to 10 degrees. also, when you top off, add very cold water.
 
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