please refer to previous conversation, this has been done to death now. I have fully explained myself. just because someone hears some advice does not mean they should follow it. I have already set out the parameters of the experiment and they need to be adhered to otherwise the whole thing is pointless. as I keep saying you clearly do not understand what this little grow is about. at this point I really can't see you ever understanding it so why not just unsubscribe. save us all the arse ache.