New Pool - Del Eclipse Ozone not same as model in quote...need advise

Hi - Our new pool is a couple weeks away from being plastered.
The equipment is installed now.
I noticed that they installed a Del Ozone Eclipse I.
When we approved the original quote it was a Del Ozone Eclipse II. The contract just says Del Ozone Eclipse.
But, we paid for the Eclipse II. Right now one of the reps from the company is saying model I is big enough for our pool
I believe our pool is a little over 15,000gl with a spa.
Is there a true benefit to having the larger Del Ozone Eclipse given the size of our pool?
Thanks,
Jim

I think what you'll find here, is that we generally think you'd be best off with NO Del Ozone unit at all.

Here are a few reasons:
+ ozone can't be used to produce a sanitizing residual -- it's too toxic, far more toxic than chlorine gas, and too hard to dissolve in water -- so chlorine HAS to be used. (If you really want to waste a lot of $$$'s, you *can* use bromine, instead of chlorine.)
+ BUT, ozone and chlorine destroy each other, so using an ozonator on a chlorinated pool is sort of a case of peeing in your own soup.
+ BUT IF, you don't chlorinate, you'll end up with an unsanitary pool . . . because the ozone never makes it out to the pool where the people . . . and algae are.
+ PLUS, aeration based ozone injectors tend to add a LOT more air to the pool water than they do ozone. This areation process strips alkalinity and causes the pH to rise. It's not a problem on VINYL pools: you can just operate with low carbonate alkalinity, and use borax to buffer. But on concrete pools you MUST maintain adequate carbonate alkalinity and calcium OR you will damage your plaster.

. . . and so on.

Sorry.