I'm going to be upgrading to a 4 bulb t5ho fixture from a 2 bulb and will need to really get my ferts in gear. Up til now I have just been fertilizing 3x a week with flourish, iron, and macros with adequate co2 but would like to start properly EI dosing with dry ferts due to ease and cost. I will just measure out the day's ferts in a pill box divider and dump em in every day and it should be easy. I need to know where in edmonton to go to buy ferts locally, won't need much, just for a 36 gallon