Help!! Possible double deficiency

[DonDankles]

What is this?!?! Calcium def? Manganese def?!?!

SOIL:

How long has this problem been going on? 5-7 Days
What STRAIN are you growing? S.A.G.E.
What was the establishing technique? (seed or clone?) Clone
What is the age of your plants? Week 7
How long have they been in the soil mixture they are in now? 75 Days
How Tall are the plants? 3'
What PHASE (seedling, vegetative or flower) are the plants in? Late Flower
What Technique are you using? (SOG, SCROG etc) LST
What size pots are you using? (Include how many subjects to pot) 7" Square
What substrate/medium are you using? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?) FF OceanForest
What Nutrient's are you using? Grow Big, Pure Blend Pro, Cal Mag +
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful*
How often are you feeding? Once every 48 hours
If flowering, when did you switch over to using Bloom nutrients? After 2 weeks of veg
What order are you mixing your nutrients? veg nutes 1st, bloom 2nd
What is the TDS/EC/PPM of your nutrients used? n/a
What is the pH of the "RUN-OFF"? 6.7
When was your last feeding and how often are you feeding? With every watering
What size bulb are you using? 600w
What is the distance to the canopy? 12"
What is your RH Factor? (Relative Humidity) 55
What is the canopy temperature? 76
What is the Day/Night Temp? (Include fluctuation range) 76/70
What is the current Air Flow? (cfm etc.) 750
Tell us about your ventilation, intake exhaust and when its running and not running ? Running 24/7 - notice clogged filter w/ dead bugs, just replaced it
Is the fan blowing directly at plants? Yes
Is the grow substrate constantly wet or moist? No, dried out before watering
Is your water HARD or SOFT? hard
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water? Tap
Are you using water from a water softener? No
Has plant been recently pruned, cloned or pinched? Not since veg
Have any pest chemicals been used? If so what and when? Sticky traps
Are plant's infected with pest's? just recovered from gnats, added beneficials

 

[Hash Man]

looks like calcium issues to me but im no expert. seems like lots of calcium if you have hard water and are feeding calmag every water and every 48 hrs.

 

[DonDankles]

I do a light feeding with every watering only hitting them hard twice in flowering.

Sorry I didn't clarify, but I only feed calmag twice in flowering.


Currently flushing...

 

[Hash Man]

its cool the form is a bit wordy sometimes lol. maybe its a calmag deficiency then. i have been using the lucas formula with floranova and noticed some issues like that. i was feeding at 450 ppm every water, the sweet doenst ride the ppm, but sweet i used at 1.2 strength.... so i checked the ppm of the runoff, like i do every 3 waterings and found that the plants had 100-200 ppm of nutes in them, as a result of my light feeding. i said f it ad went with 1000 pppm last feeding. i gues i will use this ppm every other feeding so my levels stay in the 1000-1400 range,,,anyways if you are flushing its probly not to big of a deal.

 

[Hash Zeppelin]

it does look like a cal. mag. deficiency to me, and i noticed that i had to use high ppm's with floranova grow and bloom. I even added epsom salts, but be careful not to go overboard. ajust slowly with soil.

 

[Dr420CloneX]

Yo guy. I had this same problem before. I found out I had a wrench that somehow fell in the bottom of my resvoir and got rusty. It then made rust spots everywhere. I think its a calcium defiency but anyways i cleaned and flushed and the problem went away. Hope you got the problem under control. Peace

 

[Weedio]

It could be fungal... Is it spreading down the leaf veins?