Ok, so I got a bit side tracked, but Im back now.
Pre-filtered tap water is now:
NO3 = 0
PO4 = .5
KH = 3
GH = 5
PH = 7
The strange thing here is that I must have tested the tap water and got 10ppm a dozen or so times, now its suddenly dropped to .05?? which I retested 4 times...now Im...