online calculators dont really work. they try to make stocking seem like it is a clear-cut objective subject when that just isnt true. calculators can give you an idea as to what to put in your tank, but you really shouldnt use them to the T. with stocking, you just need to get the hang of it. asking for advice here is a great way to start, and then eventually you'll have enough knowledge to be able to stock you own tanks by just looking at them. no calculator ca do that. plus, the calculator still leaves out so many subjective issues with stocking that are very important, not matter how many calculations and rules it puts into place.