Guide to Nutrient Deficiency or Toxicity

Anyone have any good tips on how to up your [FONT=Arial, Helvetica, sans-serif]m[/FONT]olybdenum? My plant seems to be showing signs.... pretty red leaves and such. I know i need to add sulfur and phosphorous but does anyone know any good organic additives?
 
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This is my first post but I've been reading this sight for a long time. White widow on the left and pineapple chunk on the right. This happened after transplant from solo cups to 3.5 gallon pots. Started seeds in oasis cubes. Always been in 100% perilite. Nutes are sensi grow. Only using half of recommended dosage. Under 400w MH. Temp n room is 75 degrees. Just looking for a little advice. I have read this whole thread along w many others but I know a picture says a lot. Any thoughts are appreciated. Nothing extreme "yet" but want to correct it before it gets out of hand. These are the only plants out of the bunch showing this. I'm thinking of bumping up the part a of the two part nute to boost nitrogen?
 
All of a sudden 3 outta my 12 babies are getting yellowing leaves (older ones) starting at tip n working back,green veins and 2 also have brown spots?? any advice would b great! First time soil grow, I've always done hydro
 
0808131623a.jpg0808131624a.jpgCan anybody point me in the right direction with this? The one with the BAD leaves i thought was some bug spray burnage but startin to work its way up the plant. :dunce:Thx for any help0808131424a.jpg
 
Thanks very much for this post! I do have a question tho, what about sodium from tap water? i have been filtering my water with Britia but seems like they arent enjoying.
 
I have been having problems with my plants doing this as you see in the picture. The inside of the leaf, closest to the stem is turning light green on the new growth. The strain is "Death Star". I have my pH at 6.5 and I am growing in soil. I am using general hydroponics flora series nutrients following the guidelines as recommended. The pic is of one of my small plants but my large ones have done the same thing. I thought it was magnesium deficiency but it looks like it could be an iron deficiency as well when I look at a nutrient deficiency chart with pics of the leaves. So I foiler sprayed them with one teaspoon per gallon of Epsom salts. I also used well water which has more iron in it for the foiler spray with Epsom salts to cover both bases so to speak. The large plants seem to be doing better now but with my small plants I am now having the same issue. Could it be that the pH is so close to locking out calcium and magnesium at 6.5? Because I know anything lower than 6.5 in soil can lock out magnesium and calcium. Should I maybe try spraying them with a foiler spray the same as I have done before but with the PH at 6.7? Any help would be greatly appreciated! Just wondering if anyone else has had this problem as well. I have heard "Death Star" can be kinda difficult to grow when it comes to nutrients.

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Just a lil update for anyone else that have had this problem. Just tested one of the small plants as shown in my pics and I ran 6.5 pH water in and got 6.8 tipping 6.9 out on the water run out from the bottom of the pot. That means its an iron deficiency and not magnesium deficiency. So in the next watering I will prolly use use a pH of 6.2 to hopefully solve the problem. Meanwhile I am going to foiler spray the plants with a diluted micro nutrient spray using well water at a pH of 6.5. Man this death star strain can be a pain! It seems like a pH of under 6.5 and I get a magnesium deficiency and over 6.5 I get an iron deficiency. It produces good medicine but can be a pain to grow sometimes. :wall:
 
Hey everyone I'm growing a few on the lucas formula and they are in early veg. New growth seems healthy but all the lower leaves are wilting off and dying (about two or three sets of leaves starting from the bottom)  under some led lighting with Mylar walls getting misters to the roots. Any ideas of what's going on?
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They are feminized Sannies Seeds: Kolossus. temps, ph, everything seems to be right to me, would love to hear if it is def. in anything.Thanks in advance for all the help I know I'll get! :D

Ps. Feel free to use these pics for def. and tox. Guide
 

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Hi Im doing a soil grow indoors and have a kali mist that i think is showing signs of calcium def. I have several other strains that are doing fine. Im using canna pro soil with a ph of 6.5 and tap water with a ph of 7. Vegged from seed for 4 weeks and flipped last week. A one third canna terra flores feed is all they've had a few days ago.006.jpg004.jpg005.jpg003.jpg002.jpg
 
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