Works great for my water which has almost no trace mineral / micro-nutes content from tap (30-40ppm).
Before using i couldn't get anything to grow past seedling stage.
Worked great until end of cycle; never used the suggested amounts but instead just based on what was coming back from plants on ppm vs water. If ppm went up = less nutes, if ppm went down = more nutes
End of cycle into bloom; something feels wrong with nutrient mix. Was dropping down to 500-600ppm to get it to balance and not show nute or nitrogen burn on plants.