Looks to me like additive overdose and your ingoing water ph is too low.

I'd check for what the Ocean Forest provides nutrient-wise, and check the ingredients on your nutrients and additives, and see if there is some double-dosing happening. Back-off from any redundancies. (unnecessary repeating)
This is one of the main reasons I think that keeping it simple is the best way to grow. The more additives you give to a pre-fertilized medium, the more it will take to determine what's causing your problems.

For peat-based mediums ingoing ph should be between 6.3 and 6.8ish, or you risk nutrient lockout. "around 6 - 6.5" is a big spread, and you should pay close attention to your ph till you get to know your garden. Letting your ph jump around is a good way to stress the nanners out of her. (not a good thing)

If you are starting with a water ph of 6.0 and then you add your nutrients, the ph dives even lower. Try getting the water ph to 6.8 to 7.0 before adding the nutrients.
Rusty Trichome Reviewed by Rusty Trichome on . I FILLED OUT TROUBLE Shooting FORUM NEED HELP!!!! What is your experience level? Novice Your Equipment: .1) Type and wattage of lights. 600w Hortilux Super HPS .2) Distance from tops? About 12 in. .3) Reflector type? Regular Hydrofarm XXL HOOD (no cover) .4) Is there a consistent fresh air supply? NO Rating: 5