I'm not in Toronto or the GTA but we use Homegrown Hydroponics here in Barrie. DH works in Toronto and went to the HGH store out by the airport. He says it has more supplies and part of their store is set up with grow stands etc. I would recommend them. BTW, the people who work there also use hydroponics.

thank you so much for ur help. i will check them out

try *Bustan in Toronto. -

There are a few stores in GTA. I use one at 26 Meteor Dr in Etobicoke. Every year at the end of October they have Expo - quite interesting event with lectures, exhibitors, free samples and give-aways, tax-free purchase, etc.
You can find other locations on their web site http://www.hydroponics.com .