Thanks for getting back to me so quick Stinky!
My fert solution is Bio-Grow 8.0-2.0-6.0 Liquid plant food, 3ml per litre.
Unfortunately I have not got a PH reader, but a Liquid PH test is in the post. The earth isn't too moist or smelly, so I haven't been too worried, but I will let you know the score... For now I will flush it.
As far as poking extra holes in side of pot, I'm gonna do that right now!
Having googled that Bacillus Subtilis I'm led to believe yr some sort of horticultural genius, that sounds amazing! Unfortunately I am a resident of the United Kingdom and they don't make/sell Serenade in the UK - is there any other alternative product? I've checked my Hydro superstore, but they don't seem to stock anything with a similar name - do you know GroWell > Hydroponics, Grow Lights, Grow Rooms & Plant Lighting , any ideas what the English version of Bacillus Subtilis might be?
Is it one of these :
GroWell > Plant Health Products

Thanks again!