Earth Juice Aerock Options:Aerock 50 Liter The second digit indicates voltage:

The second digit indicates voltage: 1 = 120V AC

MP – organic growing

then harmlessly converts to CO2 and oxygen

That’s why these are offered in round plugs and square cubes

• Highly reflective interior—significant increase in reflectivity for improved lighting performance

Earth Juice Aerock Options:Aerock 50 Liter The second digit indicates voltage:A premium hydroponic growing medium. Fired blown clay material that is sterile, lightweight that can used in hydroponics, blended with soils for improved aeration, or as decorative top dressing for container plants. Use it alone in hydroponics or try blending it with coir or your favorite planting mix for superior aeration. Aerorock is a much better alternative to perlite, in that it will help buffer nutrients and not lose its structure and air