can these nutrients be used alon in a hydro setup?

http://cgi.ebay.com/Floralicious-GRO...QQcmdZViewItem

I purchased them but must they be used in conjunction with a gro and bloom fertilizer. I cant find anything that tells me.
rzaodb6 Reviewed by rzaodb6 on . FLOralicous grow and bloom can these nutrients be used alon in a hydro setup? http://cgi.ebay.com/Floralicious-GROW-BLOOM-Qts-Hydroponics-FREE-SHIPPING_W0QQitemZ7725116700QQcategoryZ43555QQtcZphotoQQcmdZViewItem I purchased them but must they be used in conjunction with a gro and bloom fertilizer. I cant find anything that tells me. Rating: 5