CYCO Swell, 20 L Sentinel / GPS Granulated rockwool works great on

Granulated rockwool works great on its own or mixed with other loose media such as expanded clay rocks or coconut fiber

while others deliver slow-release nitrogen over time

Although this fixture features 8 inch oval air-cooled fittings

potassium and other essential plant nutrients needed for vigorous fruiting and flowering

CYCO Swell, 20 L Sentinel / GPS Granulated rockwool works great onThe phosphorus in Cyco Swell plays an essential part in photosynthesis, helping with plant maturation, increasing growth and encouraging blooms. It also provides a healthy dose of magnesium, which activates plant enzymes needed for robust growth. Swell is also recommended in the later flowering stages, as magnesium also promotes increased levels of essential oils and greater fruit size.