Part A supplies calcium, nitrogen, and iron support. Part B completes the profile with phosphorus, potassium, magnesium, and sulfur. The system is separated for concentrate stability and mixed together only after dilution.

Lime Green
Forms the mineral backbone of the feed when paired with B-X PRO.
A-X PRO and B-X PRO should never be combined undiluted. Add A-X PRO to water, mix thoroughly, then add B-X PRO.
Match A-X PRO and B-X PRO ml/L for predictable base balance unless the calculator or approved label says otherwise.
ROOT-X, MICRO-X, PK-X, and TRACE-X belong after the base is fully diluted. Use only products currently shown in the active CATALYX range.
Measure EC after the feed is fully mixed, then adjust pH and record the final values in Grow OS.
beginner
1.2-1.8 ml/L each
standard
1.8-2.4 ml/L each
professional
2.4-3 ml/L each