Hello again everyone. I have another question for your expertise. I am currently waiting for my tank to finish cycling with Tetra Safe Start. I currently have 4 guppies, 4 neon tetra, 2 peppered cories, and 9 ghost shrimp. I am not going to add anything else until it is completely cycled but was wondering how many more neon tetras i could add safely without overstocking my 20 g. (24"x12"x16"), and how many I should add at a time to not throw off the cycle. Thanks again for all of your help. I have learned so much over the last couple months.