Seiryu Rock L115 Seiryu Rock This CO2 tester kit is

This CO2 tester kit is ideal because:

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Dark Seiryu has emerged in recent years and is now one of the most favorite stones

If you then add some extra CO2 to your tank

Seiryu Rock L115 Seiryu Rock This CO2 tester kit isSeiryu Rock L are stones weighing 1. 5kg to 2. 5kg. Seiryu Rock, also known as Ohko Stone, can release calcium into the water. Seiryu stones are dark in color and have an irregular appearance. It is the ideal stone for 'mountain scapes'. Due to its dark appearance, this type of stone perfectly matches fresh green aquarium plants. We sell Seiryu stones in all shapes and sizes. For a beautiful scape, it is important to work with different sized stones.