Hi and welcome to reefcentral!!
I think you have what is potentially a very nice, very fun set up! You have what looks like good lighting, lots of rock, some flow, and a reverse osmosis unit. Basically you are starting from a good place, as you already have a lot of the hardware that people in this forum will be shopping for or upgrading to.....
So the first decision you need to make is if you really want to be the person who takes care of the tank. As has been previously pointed out, it is not going to work for you to become the maintenance person for your husbands tank. Getting the tank back to a nice place is going to take some work, and a lot of learning and if you put in the time, you should probably get ownership of the product.
The other aspect is that as you become knowledgable about the hobby a lot of the suggestions your husband (unless he starts to learn too) makes about the aquarium will seem preposterous.
"Lets get that red fish!" he'll say............"That flame angel will eat my zoos!!" you'll reply, "no way!". "How about a lionfish!, They're cool!", he'll suggest......and you'll just shake your head.
He can't run the tank unless he knows about it, in the same way that someone who doesn't know about cars can't run your husbands car dealership.
So if you are still reading I assume you decided that you want to run the tank! Great!
The next thing you need to do, before you put anything else in your tank is to decide what you want your tank to look like, and what you want to keep in there.
Is it going to be a fish only tank?? That would mean less fuss (but less fun too).
Are you going to focus mainly on soft corals, or hard corals??
Is there one type of fish you really like or really want to have??
At this point what I would suggest is going to the hardware store, and putting your tank lights on a timer, and letting the tank run, as is, while you do some reading.......
Look at all of the tanks on this site. Choose fish and corals you like and find out what they are. Find out more about your set up (ie. what kind of lights do you have).
Once you have a picture of where you want to end up with the aquarium, you are ready to buy a test kit, and then think about getting some fish or corals.
Keep posting your questions in this thread as you go, and people will keep answering.
Above all, have fun......if it isn't fun it isn't worth it! And by the way, the only relaxing aquariums are other peoples aquariums
Cheers,
Aaron
