Nutrient Deficiency Confirmation please.(pics inside)

hi guys, i think my plant have a calcium deficiency and i just want to know if i'm right. She is in the 16 day of flowering , and she doesn't look to good, she have 2-3 yellow leaves in the bottom , some stems are red and a bit of curly leaves right in the morning when i turn ON the light . I have reason to believe that the ph soil is low, as a week ago I exaggerated a bit with nutrients (biobizz) having a pH of ~ 5.6 and I think that soil pH decreased more. Today I started to wet only plain water with pH of 7.4 so I hope that will increase soil pH. . Yes i know i should buy a ph meter and ph up and down But Not now, about a week I will. I just need to tell me please if I am wrong or is it a calcium deficiency.(from what I read he would only occur when soil pH is too low ). thanks in advance. peace!

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dunno br0 if its a calcium deficiency but the lower leafs dying is normal get a ph meter or some litmus paper or ph strips is cheap man cant see with y0 pix but looks alright maybe over watered da lefs are drooping

Its hard to tell what the deficiency is...... Watch that you don't overwater like ZoOt said. But if your confident its a calcium def. get your hands on some supernatural greenstay. its used as a foliar spray and it will green up your plant overnight. Its basically calcium, magnesium, and iron. And it will cure all any one of those deficiencies. Whenever my plants are looking a little sad and the leaves are yellowing a bit, i just foliar with it, and it brings them back and keeps them green.

http://www.supernaturalbrand.com/products/green-stay/