I didn't answer you, sorry. I'm smoking my new table that just finished curing and I'm a lil' fractured. I run about 250ish TDS in my tap mostly Ca/Mg. So if your tap is a lot lower add a little Ca/Mg. I use General Hydroponics CaliMagic with good results.cant tell if praise or shot at previous post...
I do my best to just share my personal experiences and not just spew stuff i want to be accepted as fact.
I have very low ppm tap and get spots like that on stuff thats a few days old that usually go away in a day or two. It always goes away so never thought much of it. You think a small does would help speed things up a bit? im all for faster.