TERRA AQUATICA (GHE) - TRIPART MICRO SOFT WATER - 10LTriPart Micro Soft Water 3 part "Building Block" nutrient system: T. A. TriPart gives the best possible balance between concentration and flexibility. Why buy grow nutrients, bloom nutrients, a CalMag and a PK, when you can grow from start to finish with just three bottles! TriPart nutrients allow you to perfectly match the changing needs of your plants by varying the mix as your grow progresses: more TriPart Grow during growth, and more TriPart Bloom