GB: Now that you mention it i remember finding soil testing kits when i was originally looking for my PH meter so im gonna go grab one asap cheers!
Email: Thats a good point, could be worth a try, possibly if i made a solution with the soil mixed in that would also have a estimate to the soil's ph? Anyway i think im gonna be grabbing myself a soil PH kit soon anyway. Cheers for the input once again!
ASF2J: Ah right ok then i dont think i'll use the water run off, that makes sense actually! Thanks mate
Kulan Hunter: Yeah looking at the description of N deficiency it matches up pretty well particularly with the older leaves becoming lighter green/ yellow. I have a PH lockout chart somewhere saved on here i'll find it now. Cheers once again!!!
Everyone: Sorry about the delay in replying to all of your replies, i really appreciate all of the time and support you guys are giving! I had to dash off last night shortly after my last post. Basically i gave her a watering with a weak solution of canna Boost and i also added a bit of PK13/14 (its only seven days until it suggests i add it anyway and im sure i read somewhere that this strain likes it a bit early.). And i must say she looks better today. Unless its my eyes playing tricks on me due to me being hopeful i genuinely think her leaves a darker more healthier green now. I remember comparing her leaves to that of Mary and noticing they were paler, where as now theyre almost matching (Bar the damaged parts and older yellowing leaves).
Im about 80% sure that shes on the mend

Her buds havent been affected by this much it seems and the leaves surrounding the buds only started to brown on the tips but hardly any. Shes got crystals forming everywhere some of the smaller buds are all ready covered. The smell seems to be developing each day. I cant explain it today. Never smelt anything like it, again a kind of soft fruity/ berry undertone to it but other than that i cant describe it.
Thanks again for all the help guys i Really appreciate it!
TGP