Hydrium pools are semi-permanent

What does this mean exactly? It means you have the luxury of a full sized pool that you can, if you want, leave set up as long as you want. You can choose to pack it down over winter or leave it setup for many years.  

Can a Hydrium pool be left out all year? 

These Bestway pools are designed exactly for this. The corrosion-resistant galvanized steel wall with heavy-duty paint coating will withstand all kinds of weather. 

If you don't plan on using the pool over winter, its a good idea to winterize it

1. Clean the pool
2. Balance the chemicals
3. Give a strong Shock Dose of chlorine
4. Empty the water to just below the skimmer
5. Detach the filter pump and place into storage
6. Put the pool cover on
7. Throughout winter, its a good idea to perform some visual checks.