Buds have small droopy leaves and getting worse!

First grow and one of my BC Kush's is having a prob with the small leaves on half her buds wilting and another BC has rust spots. I think the rust is a mag deficientcy. Also my drip system pulled a vacum and filled the drip pan about 2 weeks ago and that caused the rams horns, now has shutoff vlv. The last pic is a Kush that is pushing 6', her flowers are slow to develope, do you think it will fill in? I have also posted pics of the rest of my garden to let you all see the general health of my girls so I can get some advice on anything I may be screwing up on.

My garden has 2 strains BC Kush from seed and Herojuana Og from clones.

Fox Farm Ocean Forest w/Mykos n 5 gallon smart pots.
DM Gold a&b.
Saturator w/ Liquid Light.
Add 27. GH Bio Bud.
Nutrifield Alaska Pure (flower enhancer).
Nutrifield Fulife (fulvic acid).
Cannazyme.
A little Superthrive every couple of weeks. Epson Salt twice 2 weeks apart.

They are into day 23 of flower. 4x1000 watts hps. 400 cfm in 6" passive out. Daytime temps are 75-80, night 65-70. Usually the RH is 40-45% but it is between 52-56% due to rain for the last 4 days. For the last 2 weeks I have been feeding them every second watering with 1.5-2 days between water/feed. Nutes are @ 1500 ppm with 6.3-6.5 PH. The tap water is hard @ 220 ppm. Thanks for the help.