No Mercy C0₂ Tablets are an easy solution for a quicker and richer bloom. They're suitable for any system or medium. Growth stagnation in plants is often caused by a shortage of C0₂. No Mercy C0₂ Tablets introduces C0₂ directly into your plants' roots and so significantly increases growth speed. Remember to use No Mercy C0₂ Tablets in 'light on' rather than 'light off' periods. Simply add 1 tablet per 100 litres of water and watch your plants grow up to be happy and healthy!