Additional Experimental Errors

Another experimental errors that I thought of today have to do with the food. While I followed the feeding instructions on the back of the food (drops) container, I had to change the amount of food based on how much water was left in the tanks. For example, I had been putting 15 drops in all three tanks at the beginning, but as the amount of water in both tanks #2 and tank #3 decreased, I had to decrease the number of drops that I put in each tank. This number may not have been the right number of drops per gallon (or amount of water).