i ordered from: Hydroponics | Hydroponic Supplies (only good things to say about them. live chat is available for tech questions, and shipping was one day earlier than they quoted. recommended!)

each one was $11.60. i just ordered 1L "canna aqua vega" and "canna aqua flores" each to see what they work like. they also offer "canna terra vega" & "canna terra flores" for soil grows. stinkyattic uses canna nutes in her hydro stuff.

i've seen someone on here get really nice results with hempy buckets, but google search found me nothing. didn't dig too deep though.