The one-part vegetative feed, designed specifically for British hard water.
Switch to Hard Water Bloom in week 6.
The one-part flowering feed, designed specifically for British hard water.
Run Hard Water Grow for weeks 1 to 5, then switch to Hard Water Bloom in week 6.
5 ml per litre of water.6 ml per litre of water.
Rates change through the grow. The full schedule is below.
Download the schedule (PDF)Set your tank size. Every week shows the dose in millilitres.
Totals are for your tank. Tap a week for humidity, temperature, light, EC and pH.
One bottle, straight into the tank.
Add it at the rate above, in millilitres per litre of water, and stir. The pH holds steady, so it should need little adjustment.
Add products one at a time, stirring between each. Never mix concentrates neat.
Measure every dose. Eyeballing is where most feed problems start.
Keep the tank covered. Light in stored solution eventually means algae.
Use IONIC Tonic only where there is a recognised need: 0.5 ml per litre for one week.
Supplements and stimulators that slot into the schedule above.
Designed specifically for British hard water. Neutralises the bicarbonates that push pH high.
The Hydro formula, rebuilt for hard tap water. Balances the calcium hard water brings.
Restores vigour and corrects deficiency. Use only where there is a recognised need.
Phosphorus and potassium at 14:15, for the hungriest weeks. Fortified with iron.
Plant-based root stimulator that ignites rapid root growth in early establishment. 100% organic.
Plant-based bloom stimulator built on triacontanol. Fuels explosive blooms, yield and flavour.
Use IONIC Hydro Grow and Bloom.
The Hard Water formula is built to neutralise the bicarbonates in hard tap water. On soft or reverse osmosis water, use the standard IONIC Hydro range and its own schedule.
