Thanks for your input,how long have you been growing in coco?,do you start straight of at ph 5.8 6.3,I ask this because once my cuttings had rooted I put them in 10 litre pots,coco professional plus,ph was 6.1, I use plagron a and b,first 2 weeks they stressed and lost colour,added some calmag and enzymes once a week and they picked up a bit,still not thriving though,they started to burn on edges of leaves,I flushed them through thinking it was feed burn because of build up of salts and not feeding due to stress,still not thriving,when I flushed out the run of was 6.2,I was told to drop my ph and up the food,I was giving them 2ml to a litre,dropped ph to 5.5 to 5.8 and upped food to 3ml a litre,on 3rd week of flower now and I'm impressed,they respond so quick once you get it right,I will try an get some pics up but I'm having probs with finding how to send them in a message on this iPad 2 ????? Any ideas,once I get the pics up you can let me know how I'm doing,chat soon peace:wtf: