I have been incredibly busy lately. Due to lack of time I have not been selling or giving away frags etc. I would just bag them up and drop them off when I knew I was going by the LFS. Well I went by this weekend and had some time to chat. The owner informed me I had built up close to $3k in credit and wants me to use some of it. I thought about getting a 24 gal nano setup with MH lighting to play around with. I am wondering if I would get bored with it. Any suggestions? Any ideas of something cool to add to existing tank?