You can always build a 20(ish) gal bio cube salt water set up. Much easier to keep. I helped my dnl do one and its really nice and not a headache to clean either. Sale what you have and check out the smaller units they have now.
If I ever decide to have one again that's the way I'll go.
If I did that it would not take me long before I wanted to go BIGGER. I tend to like things that need room and fish that school etc.