So my 29g planted aquarium is all set up. It is just about to finish it's cycling with high nitrates and no ammonia or nitrites so it is close to time to add fish after a large water change. There are 3 species I'm adding to the tank but I am needing to order them online in one big order as they are not available where I live. I have gone to multiple lfs and none of them have the species and are not interesting in getting them right now. So my question is can I add them all in at once after the tank is completely cycled, or do I need to still add them slowly (the latter being difficult as all fish will come in one order). And if they do need to be added slowly does anyone have suggestions on how to do it with all the fish being delivered at once. Thanks.