To start I have a 96"x20"24" acrylic, 2 FX5's, 2 48" Glo T5 H.O. Dual bulb fixtures. Currently with roughly 2" of 1/8" and smaller black starlight granite substrate, one peic of drift wood 18"hx12"x14" upside down tree roots, a few misc. plants, 2 fluval 300w heaters, 10" Jag, 13" Tiger oscar, 2 sailfin plecos, 5" striped rapheal catfish, 14" spotted gar. The gar is extremely dosile he doesnt bother anything EVER never once had a problem with him. So what im asking is Ive heard a few mixed opinions about these guys that i need R.O. water and they are SOOOO hard to keep. I know the Plecos gotta go other than that I dont think Ill have any problems with the other fish bothering a ray.