Lovely, ok, I'll wait until I can talk with some live people before getting anything else on the layaway setup. I'm really confused now. Every single thing I've looked at talked about a sump and that media like the bioballs were the way to go. I've been on so many websites, watched videos and read so many books. Super confused!
Ah! The familiar confused feeling all of us had when we first got into this hobby. Not to mock you, but it's almost a right of passage [emoji6] Good thing is you haven't set anything up yet. And even if you don't get a full refund, even a store credit will be just as good. You'll be amazed how quickly you use up that store credit so it won't be wasted money I assure you.
As Chris pointed out, I think coming to the meeting will really help you get a jump start on things. I used to have a similar sump and have to say I wasn't thrilled about it. It was a rookie mistake for me and I'm glad to be rid of that thing. You have options though - lots of options. Some even much cheaper as I'll show you with my sump. A home made DIY sump that cost me ~$40 total. I made it out of a small aquarium and customized it to just how I wanted it. Or you could get one online as well though let me warn you, reef sumps are quite pricey!
Just a heads up - I have the RODI unit at the house but as mentioned have not set it up just yet. So while I can show you how big the unit is, unfortunately I can't show you how it operates. There's plenty of folks in the club who have one up and running who will be glad to show you how it works though.
Don't get overwhelmed. I know there's a lot of info to digest but we'll help through all of it. Before you know it you'll have a fantastic setup up and running!