mycorrhizea, kelp, and gibberellin

I wanted to use mycorrhizea, kelp, and gibberellin in my bubbleponics. How do I know which one to get for hydroponics?? Do i get the powders or do I get the gels??

i'd go with pirhana for mycorrhizal fungi and grandma Enggy's seaweed extract if ur wanting kelp. both by advanced nutrients. don' know much about gibberelin, does that have anything to do with gibberelic acid? anyways try this,
http://lmgtfy.com/?q=what+kind+of+gibberelin+%20should+i+use+for+hydroponics