/diy/ - Do It Yourself

I'm adding an additional tank to this outdoor pond. Unfortunate the bottom concrete pond isn't level. I want the tank resting on it to be level. How do I create a support that is level? It's maybe 3/4 inch difference across 3 feet - since I'm adding a spillway from the top to bottom, it will look weird if it's on a slight angle( water won't fall gracefully I think.)

I thought about cutting pieces of wood on a table saw at a slight angle, and then gluing them together. Don't have a tablesaw, but could possible work at a friends.

Thought about creating a concrete mold. That would provide additional support to the tank, which is an added benefit. feels like a lot of work, just b/c I haven't done that before. Maybe it's easy.

Would love some other suggestions.