Hello. In a few weeks I will be going from a 55 to a 125 gallon tank and will be moving my teacup stingray, black ghost knife fish, clown loaches and angel fish to the new tank and returning the rest of my fish. I'm gonna be slowly adding driftwood to slightly lower the ph and be adding about 10 discus. I've heard from my lfs that royal pleco can actually be housed with stingrays does anyone know if there's truth to this. Furthermore does anyone think there will be any problems with this set up? The tank will be heavy planted with sand substrate and a fluval fx5 filter.