Too much of a good thing???

Hello all! This is my first time posting on the forums, but I am a long time reader. I am 1month in to my first grow. I am using a 400W Hydrogrow HPS ballast and hood system supplemented by 3 105W halogens for 2 diesel and 2 mango, razzleberry, and a golden goat. I have been watering heavily every 3-4 days waiting for the soil to dry in between. The plants were very healthy until fertilizing for the first time with 1/2 dose last week, then spots began to appear like those in the attached photo. The spots appeared first on the razzleberry. I havent fertilized since they appeared. These spots started to appear on the golden goat plant then began to appear others . IS this just fertilizer burn or are other factors affecting the plants to cause these spots.
-thanks in advance
colostoner84

How's your ph? looks like a calium dif.

To fix a calcium deficiency you can treat by foliar feeding with one teaspoon of dolomite lime or Garden lime per quart of water, Or Any Chemical/Organic nutrients that have Calcium in them will fix a Calcium deficiency. (Only mixing at ½ strength when using chemical nutrients or it will cause nutrient burn!)
Or you can take crushed up dolomite lime or garden lime in a gallon of water and water it in the soil. 1 to 2 teaspoons per gallon of water, which will be slow acting. Garden Gypsum, which is medium absorption. Limestone, which is medium absorption, Rock Phosphate and Animal wastes which are both medium/slow absorption.

I thought it might be pH because I have also only been using tap water and denver tap has a pH range 7-8.5. Thanks for the tip with the lime. I'm off to get a pH test kit and some calcified lime right away!

So I tested pH and nutrient levels of the soil and pH was near 7 nutrient levels were at the edge between ideal and less than ideal. i added a cap of vinegar to the water to get it to a 6.5 and used it to water the soil. I also did a foliar feed with 1 teaspoon garden lime in a 1 liter. Any other likely causes to yellowing leaves and copper spots?

a pic of cal diff.
View attachment 753110

oh get rid of the holagens.waste of power.no help to the plants. just more heat.

stumps said:

oh get rid of the holagens.waste of power.no help to the plants. just more heat.

Click to expand...

Yea i had a halogen hooked up at beginning of my first grow which is in progress and it burned the edges of the plants and kept the room to hot to control i switched for a T12 which is less then ideal but it is working alot better keeps them from stretching since the halogen had to be 6in+ to keep from harming the babys.

thanks again for all the help the problem ws a calcium defciency and nutirent burn all lants survived and a few even turned into decent yielders (1-2 o)