I have loved having my 10 gal tank way more than I thought. I've decided to get myself a 30 or 40 gal as well (freshwater). I'm open to any ideas on substrate, stocking, etc. I'm planning on getting the new tank asap so it can start cycling. So far all I've decided on is a cory or two. As far as decor I'm not sure. I was reading on another thread about sand instead of gravel and I'm considering going that route. Any ideas are appreciated!