Stickanswered grow question 6 years ago Going with low doses, you can use it everyday, it's recommended to do it in the early morning / when your light turns on. You may want to start 2-3 times a week and see how she reacts. But please note that Alga-Grow is only for growth usage, so it's probably too late for this beautiful SpicyBitch. I'll be around, good luck bro!