Today we're going to put water, more gravel, and rocks. We're going to use a hydrometer to make our brackish water. Fresh water has a specific gravity of 1.000 and sea water has a specific gravity of 1.024 and we want it to be 1.006 to 1.008 even though the Opae`ula came in water that was 1.004. We're going to put rock in because it has decomposers and bacteria. We need these because the bacteria is food to the shrimp and the decomposers can decompose the shrimp if they die. We also added extra gravel because it had algae so they have food.
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