Diamond nectar is a Fulvic acid which is derived from Humic. Its a chelating agent and helps the plant transport chemical better. Its actually pretty cheaply priced. You can add it to your reservoir or foliar pray it. Lots of growers use to spray fulivc acid in the late flower stage to get more crystal production.
Kool bloom is a PK booster. The liquid is used in the first stage of lowering up to say week 5 or 6 then powdered Koolbloom is used for one week/feed in the last week before flushing. If you use the powdered Koolbloom from the beginning you're hairs will turn super red buy week 4/5, so dont