I would start out at a VERY LOW DOSE and build up from their , I would give 20% of recommend dosage that the bottle recommends then in the next few weeks keep an eye on the leaf color if its light green give it just a little more when if it gets dark green you need to cut it back some dark green is no good to much nutrients, you need a TDS meter or EC meter so you know exactly the amount of nutrients your giving start like 150 PPM ...on amazon for like 13.00 dollars and a PH meter same price,. hope this helps.