Hey Cosz, if you want you can give them some Bud Candy now at half strength 1 ml per liter. Use it in veg half strength and when you switch to flowering nutes you can give it the full 2 ml per liter. It will feed the microbes in your soil and no worries it won't burn your plants. Save your Bud Factor X and Kushie Kush until you start your flowering nutes.