Med-Tek Coir Series Feed Chart

Important Notes:

Feed chart based on 8-week bloom finishing time genetics. Some strains may need longer.
Switch from 18-hour vegetative lighting to 12-hour bloom lighting based on genetics and desired crop height.
Always calibrate pH and EC meters before readings.
EC values based on demineralized/RO water. Local water quality may affect results.

Super Silica Mixing Guidelines

Add Super Silica first when mixing a fresh tank. Adjust pH to 6.0–7.0 before adding A&B nutrients.
Or, pre-dilute Super Silica in water and pH adjust to 6.0–7.0 before adding to a mixed nutrient solution.

Product	Cutting	Week 1	Week 2	Week 3	Week 4
Coir Vega A & B	1ml/L	1.5ml/L	2.0ml/L	2.0ml/L	2.0ml/L
Nutrient EC Strength	0.827	1.0	1.5	1.5	1.5
Rhizo Plus	2ml/L	2ml/L	2ml/L	2ml/L
Super Silica	0.1ml/L	0.125ml/L	0.125ml/L	0.125ml/L	0.125ml/L

Note: We use EC (Electrical Conductivity) instead of ppm due to inconsistencies in ppm conversion standards.

Med-Tek Cal-Mag Micro is not included in the standard schedule as base nutrients are generally sufficient. However, it is useful for:

RO/soft water: 1ml/L
Nutrient stress or deficiencies: 1–2ml/L
LED grows (if showing signs of Ca/Mg deficiency): 2ml/L during veg/transition

Feed charts are a guide. Actual EC requirements depend on:

Feed charts help new growers refine their fertigation strategy over time.