Calcium deficiency or bacterial issue?

[mungbean79 268]

Hi I've got something wrong with one of my plants think it maybe calcium deficiency but was wondering if it could be bacterial issues before I give her calmag she's a caboose she's 18 days old in 3 litre pot under 4x18w x2 fluorescent T5 fittings in a 60x90x60 tent temps of 25 daytime 18 nighttime humidity steady 50%.

Feeding advanced nutrients range of which they've had very littl so far just 2 feeds based on them needing water every 3 days and in between feed for last week just hygrozyme I'm using advanced ph perfect sensi grow of which I've only given 1ml per litre and ph has settled at 6.6 spoke to advanced they say it's buffered to broaden the ph between 4-8 and NOT to adjust it. My water before adding anything ph is 8 and ec is 0.1whuch makes me think it is calcium but just thought I'd ask before putting anything in it rest look lush and healthy

Picture of lead is 4 tier but new growth is showing it too only way I could get good picture.

[mungbean79 268]

Moisture on leaf is from overlapping leaves but I separate them twice a day and gently shake leaves till it rolls off.

[mungbean79 268]

Forgot the are in DNA soil with cork