how often do you water? i water 2 times a day. 1 hour after lights come on and 4 hours before they go off. and i let it get a little dry before waterings helps with crystals. and it lets the roots breath a little. instead of giveing it a tone of water that last 4 days. because thats like not breathing for that 4 days. next time you water give it 200ml around the steem. if your useing nutrients never let the water get on the leafs it will burn them when the light is on. and wate for the plant to look saggy this will let you know how long 200ml will last and you can figure how much water you need for 12 hours only do this once because you dont want to stress out the plant every time. good luck sorry for the long post.