Thank you JJ43 and Wheatenergy - is the sea kelp meal a powder that I sprinkle over the 1/2 inch shoots or do I mix it with water first?

I think I will use up my kelp powder first (it cost $18 for 2 lbs!!), mixing it in my growing medium like JJ43 suggested. I did think, however, that since I'm watering from the bottom, that it would be best placed in the second tray - do you agree?

What sort of store would carry sea kelp meal? I've been to all the usual places and people look at me like I have two heads!

And I have just purchased a large fan - hopefully that helps!