I have 3 plants under a 400w hps lamp the 1st 2 plants are doing really well and are on there 4th set of leaves but the 3rd plant is still on its 2nd set of leaves the plant looks healthy but just does not seem to be growing very well. I am growing in a professional mix soil with nutrients already added and i am watering every other day. Is there anything that i can do to speed the growth of the 3rd plant up a bit please. I will post pics later on today.
Superthrive! Whenever I have a plant that's slacking I add 2-3 drops/gallon and within a week they're taking off. It helps stimulate root growth and really is a wonder product. Not good for flowering but it's a great supplement during early veg