Thanks for the info, that last link you gave me is perfect, it explains a lot & has pictures to help.

Thanks again...I owe you a smoke!!!
mrnotsonice Reviewed by mrnotsonice on . Day 15 in the big bud'er house..all well until this... :confused: Day 15 today and all was looking well at first glance. However on closer inspection many of the plants seem to have a faint yellowing around the edges of the leaves; And one or two of them have what seems to be some nutrient burn on the leaves- not too many thankfully. see pics below. The reservoir had around 15 litres of water in with the nutrient strength around half of what was recommended. I topped the tank up with a further 30 litres of ph balanced water and also gave the Rating: 5