I have been monitoring my new tank (I have 70lbs of uncured rock in there since last saturday) and my ammonia levels are as expected quite high. Been hovering around 5.0.
Today just for grins I thought I'd test both my sink tap water and the water as it comes out of my R0 filter.
Tap water 0.5
filtered water 0.25
Is this acceptable? Should I take the filter back to the LFS
Thanks in advance.