Pond water or artificial pond water

Make according to the following recipe:

Stock A Solution

• 133.0 g NaCl
• 26.6 g CaCl₂
• 1.0L distilled H₂O

Stock B Solution

• 3.8 g NaHCO₃
• 1.0 L distilled H₂O

Pond Water Solution

• Add 10mL of Stock A solution and 10mL of Stock B solution to 1.0 gallon (!?) of distilled H₂0