Here's my 75 gal. (48" x 18") thus far...will be Cichla only. Starting off with 3 C. orinocensis...and hopefully expanding from there. Trying to get some good ideas for a natural looking tank...not sure if gravel/sand would be the way to go or not...I don't like sand because I know it'll wash the color of the fish out. Was thinking of adding some green to it though with plastic plants.....where's Diesel Mack when I need him?