Hi, I have bought the KH Director and I use it successfully.
I looked at ION Director, however the more critical matter to follow is the phosphate and unfortunately this is not measured. I would have preferred one product measuring only phosphate rather than the ION despite it measures 4 or 5 matters.
Can you please tell me why there is nothing regarding phosphate today while it seems not more sophisticated than measuring KH or nitrate (even easier).
Look forward to have something measuring the phosphate!!!
Thanks