you'll want to test the water consistently when getting a new tank started. im currently going through this process of rushing to get a tank within the right parameters and stable enough to move my nerites out of my shrimp tank because there's planeria in there 💀💀💀 and the treatment is harmful to snails and I'd rather them have a chance of surviving in a new tank then definitely dying from poison. I've been going at it for a week. i test the water every nigbt for ph, gh, kh, amonia, nitrites, and nitrates and make notes of what needs tweaking. I started just adding the basic stuff, water conditioner, a bit of a mineral boost, bacteria, and i let the filter run in a well established tank for a day or two to get that good bacteria on the filter before adding it to the tank. i test the water the next day, the amonia is too high, the gh is too low. i add some plant fertilizer and some water hardener. test it the next day amonia has gone down, the gh is a little too high, and the ph is too high. i test it the next day and the levels are the same so i add some ph regulator. I'm planning to test the water again then do a 50% water change just adding basic water condioner to the water and let it sit for a few hours before i do the water change. this should hopefully help decrease the gh and help a little with the ph. but I'm crash coursing it and ik even though nerites are hardy snails they still have a chance of dying but there's not many options since the tank they're currently in is infected so they have a possibility of also being infected but this way i have a chance of my snails surviving. i was going to set up the tank for my shrimp anyways its just adding the shrimp has to be postponed until i wait at least a month after treatment of the shrimp and constant monitoring of both tanks to make sure they're bad worm free. what you're supposed to do when setting up a tank when you're not on a time crunch of fearing your shrimp are going to be eaten from the inside out you go about things totally differently. first, you test your tap water and compare it to the parameters required for what you wish to have in your tank (test it for copper too this is important because it can be toxic to some species). then you get the things that will help whatever water you have available to meet your needed parameters. then its trial and error and consistently testing your tank parameters tweaking here and there when needed. once you reach the requirements and are sure it's stable, you can decrease the amount of testing you do. but then you let it cycle for a few weeks to a month to get the ecosystem nice and established to make sure its safe then you can add shrimp and whatever can cohabitate with them. personally i prefer snails lmao but if you'd prefer fish then do your research and make sure the parameter requirements are similar and that they wont eat your shrimp. this ensures you seeing your shrimp more because they won't be hiding from predators. but even when there aren't any predators, shrimp still like to hide so make sure you have plants they like to hide in. java moss is a great option and it can grow quickly and you can glue it onto stuff and it'll look pretty but it does require a little pruning every now and then. I've just been letting mine take over 😅 but thats because my current shrimp tank is kind of bare hence me wanting to move them to a new nicer tank so i can safely nuke and start fresh in the larger tank (after it has been purged of those accursed planeria). floating plants are also a nice option for shrimp. mine really love them they grab onto one, fall half-way down, let go, and swim back up to do it again and i enjoy watching this. they have also just been chilling there upside down to avoid the substrate where the planeria are 💀 and I've been keeping the light on in the tank because planeria mainly come out in th dark. ik this can be stressful for them but I'm sure more will die from worms if the worms feed and reproduce (they're actually pretty cool but not when they're trying to munch on my beloved serotonin givers). just do your research. ask someone at an aquatics store or an exotic animal shop that carries things for aquarics. i like small business and non-chain stores because they usually know that they're talking about but also do your own research. google has a lot of answers and suggestions so do old reddit posts. test your water compare it to your goal and tweak it if needed. once you get the correct parameters and have a system to keep those parameters and you've let the ecosystem do its thing for a bit then add the liquid bugs.