Cultured Solutions Veg A & B - 2 X 946mL Pond pumps this will depend on what

this will depend on what other products are being added and what EC values you are trying to achieve

When using older (untreated) slabs

CenturionPro also has the SE model of the XL 5

Magnesium -

this meter has been specially designed for hydroponic crops that have higher-than-normal EC during their growing cycle

Cultured Solutions Veg A & B - 2 X 946mL Pond pumps this will depend on whatCultured Solutions Veg A & B combines all necessary macro and micro nutrients in a pH stable, chelated form, ideal for high performance hydro and water culture applications. Veg A & B offers plants the minerals needed in ideal ratios to ensure optimal uptake of the nutrient solution is achieved. This is designed for the vegetative state of growth, powerful green lush foliage can be achieved in our unique undercurrent system! Vegetative Formula