Ooh noesss!

I have run into something i cant really give a diagnosis on.

Before yesterday i was without a PH meter for about 5 days. (broke my old one, and could find a new one to replace it immediately)about day 3 with out started showing lil yellow spots on the leafs. last night before i changed the old res i saw these brown spots on the leafs. checked the ph and it was at 6.1-6.2. there was also brown looking fuzzy stuff in the water. it was even on my roots (which i washed off under the faucet).
i it nute burn? or some type of deficency?
im feeding 15ml of sugar peak veg and a 1/2 tsp of great white mychorrizae

Back way off on the nutrients, correct PH and give em a few days to recover before slowly bringing nutrient levels back up.
If you've got root slime, you're kinda ficked.
It could be something in the great white, but who knows. Just keep everything clean.

PH is #1 in hydro. When it get's out of line everything fucks up.