I just went ahead and flushed again, this time using 6 tsp gro, 4 tsp micro, and 2 tsp bloom. I've also heard that using CalMag is necessary when using water with very low PPM (or RO water). Is this true? Anyway, my PPMs are in tote A 400~ and tote B is 390~ with a pH of roughly 6 in each. Looks...