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The concentration of oxygen in water is higher than in soil that is saturated with water. Water culture generally contains more oxygen than waterlogged soil because it is often changed from time to time. Also, oxygen moves about 10,000 times slower in water than it does in the air, but moves much more slowly (320,000 times less than in air) when the soil pores are filled with water (Armstrong & Drew, 2002).

Mother-nutrients: Carbon 47%, Oxygen 43%, Hydrogen 4%. Macro-nutrients: Nitrogen 3%, Phosphorus1%, Potassium1%, Calcium1%, Magnesium0.5%, Sulfur0.5%. Micro-nutrients: All the rest combined 1%

Remember to clean terracotta stakes in mild acid after grow. Submerge the stakes in a solution of 1 part distilled white vinegar to 3 or 4 parts water. Let the stakes soak for 20 to 30 minutes. You will hear a fizzing sound as the acid reacts with and dissolves the mineral salts. Use a stiff-bristled brush or an old toothbrush to scrub away the loosened residue. Rinse the stake thoroughly in clean water to wash away any leftover vinegar. BOOM good for next grow!

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