As the saying goes, "good quality in, good quality out." That's why Growth Products uses only the highest quality (technical) materials, so that you're always guaranteed of products that provide superior results. If you've ever experienced problems like plant burn, leaching, or excessively rapid growth, you know that all products are not equal. For instance, fertilizer and micronutrient products with compounds like Chlorine (some examples include "Iron Sulfate" and "Potassium Chloride" a.k.a. "Muriate of Potash") or Sodium ("Sodium Nitrate") also contain very high percentages of chlorides and salts. Over time, salt and chlorine will build up in the soil. This can lead to toxicity and a slew of other growing problems.