How would I go about making water changes with a 210G tank in the basement? There's no plumbing so would be draining water into a large garbage can size container be best option? And from there let a sump pump it up to the first floor?
You are going to need a beefy pump to push water up a whole story. Honestly, if I were you, I would move the tank or get some sort of drainage installed/rigged. You could try a python hose, but I'm not sure it would be able to pull water up that high. I could be wrong though. Pythons are pretty cheap and it might be worth a try.
I used my mag 24 (very big and strong pump) to pump out my water in and out . Attached the pump to garden hose or clear hose work.
If you pump out thru the window and IF you have garden in your yard, water the garden with your tank water. It's good source and food for it and your not wasting any water.
I agree with tlindsey, I installed a open/close valve, and Tee on the line that goes from tank, to the sump, so when I do water changes, I open the valve and water is sent through a window, or door straight outside into the yard, instead of to the sump. I could change 100 gallons in just a few moments, and also water and fertilize the garden or lawn, at the same time.
Drain tank into a large garbage container and use a sump pump from there. If possible, recycle this nutrient rich water for plants/lawn.
If you're looking to include a workout regiment to your w/c regiment, then two 5gal buckets and multiple trips to the first floor will definitely make a good cross-fit training program
Draining the water into a garden or yard is fine and probably great for the plants. (That's assuming there's no ordinance for that, which in almost all cases there won't be.)
Draining directly near the house isn't such a good idea (which is one reason why houses have gutters and drain spouts.)
I used to have a tank in the basement with no sink, so to drain I'd drain the water into the sump pump pit, it would just pump into the yard, then to fill back up I'd run a hose down the stairs. Bit of extra work but it did well