Help! Problem I can't identify! Spots on leaves

Phosphorus deficiency?, and calcium? needs a good feed:cheertwo:
a little bit more info please and you will get true this... lots of good people here:welcome:
 
So Phos doesn't usually hit the veins like that.

I do see more than one issue which almost always means pH is the cuplrit.

There is what appears to be Magnesium def..

mg-magnesium-deficiency-sm.jpg



but also what appears to be some Calcium..

closeup-calcium-deficiency-leaf-sm.jpg




Phos has many faces.

phosphorus-deficiency-leaf-spots-curling-sm.jpg


phosphorus-deficiency-bagseed-haze2-sm.jpg


phosphorus-deficiency-bagseed-haze-sm.jpg


stages-of-phosphorus-deficiency.jpg


:peace:
 
Oh you guys are the shit! I water with PH'd water around 6.5 to 6.8... I have Fox Farms Big bloom, Grow big, and Tiger Bloom, but I haven't used them much because I have been afraid to burn the plants. So you guys think its time I bring nutrients in? I water just about every 3 days and its coming up on time.
 
I agree with VillageIdiot... I use the FF line as well. Start with 1/2 or less strength and watch the little ladies. If they respond well, then gradually bump up the feeding till you reach full strength. I feed every other watering. Are you growing in soil? Keeping the basics in line is crucial! So many people don't take care of the basics. PH is the most common problem with cannabis growing. Temps and good airflow is very important as well. Below are some links to look up. reading and asking question are the best way to learn...

How to Grow Cannabis - Everything You Need to Know!
Photo Gallery Guide - How to Resize, Upload & Post Photos
How to Ask for Grow Support
 
Yeah CalMag supplements are important. It is near impossible to over do them. The issue is if the pH is whack it wont help. The pH needs to be such that the mineral can be absorbed.

pH is something I have to help people with on here daily. the pH pens take forever to settle and if you only have a 2 digit pen you are bound to read it wrong if you are a newb. Some pens can take nearly 5 min to settle in solution especial if you just mixed it. for a real good reading mix your solution and let it sit for 15 min. then stir it up and keep stirring with the pen for a bit and then wait for more than a minute sitting there with the pen in solution. Otherwise your reading is almost guaranteed to be wrong. With 2 digit pens it is easy to misread. with my 3 digit pen it can keep adjusting for a very long time and if you only look at the top 2 digits you will be wrong every time guaranteed. It can take a minute but it is constantly moving just every 86 seconds or so the third digit is changing. always in the same direction..and it can take a long time to settle. so it is best to measure the solution after it has had 15 min to settle. Then start pH adjustments.

If you have crappy water it is easier. I have 12 ppm out of the tap. So the water takes longer to reach equilibrium.
 
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