my friends... I miss you both. 
Me too... Maybe Murphy (the LAW man) made my filter. I have a couple discus in the same tank and both are still alive. The same applies to my "Recife pleco" female L-238. Oh, well... At least I didn't lose my African butterfly fish and my slow-growing iridescent shark, who is 3+ years old and smaller than 7 inches. Here are the ID shark and the discus... Pic taken after I fixed the problem:So sorry for your loss, im surprised the pleco died mine got out of my tank and survived for a night under the tank.