its for just veg, but you can use it up to the 2nd week of flowering if i recall correctly. heres some info on it straight from DUTCHMASTERS:
"Don’t you want plants that grow fast and develop to their true maximum genetic potential, giving you the best yields possible? Of course you do and that’s exactly why we developed LIQUID LIGHT! It’s a known fact that plants don’t process light anywhere near as well as they should. If they could process light closer to their genetic potential the results would shock you. Well get ready to be shocked!!
LIQUID LIGHT puts your plants into overdrive by helping to restore their lost natural photosynthetic power. Liquid Light does this by providing your plants with selected minerals and phyto-nutrients that optimizes the Calvin Cycle, a critical cycle of photosynthesis. By restoring a large portion of a plants’ natural genetic photosynthetic speed, or power, plants are able to use a lot more of the precious light you provide them. Indoor Lighting is expensive to provide and the running costs can be enormous. Doesn’t it make sense to maximise your plants natural response to that expensive light?
LIQUID LIGHT is indispensible in today’s modern indoor gardens where many gardeners are now using new technology Grow Tents or Grow Huts. These tents or huts often have limited lighting due to heat and size constraints so LIQUID LIGHT allows you to get BIG LIGHT results from a single 400W or 600W lamp by helping your plants achieve their maximum natural photosynthetic power! LIQUID LIGHT works just as great outdoors maximising your plants limited exposure to full sun. Great for gardens where plants are often shaded and LIQUID LIGHT is so easy to use. LIQUID LIGHT is also one of today’s most advanced and most effective Carbohydrate supplements – bet you didn’t know that! A big part of a plants light processing ability lays in the amount of selected carbohydrates it has on hand to assist in maximising its natural genetic photosynthetic power. LIQUID LIGHT contains a specially selected premium suite of carbohydrates to naturally help your plants process all that light. Amazing! Simply mix with GOLD PENETRATOR and water and spray twice per week – it’s that simple! Indoors or outdoors... we guarantee you’ll love it!"
I can definetly say that it works. And damn it works well.!! I think its a great product that can really make a difference for cfl growers.