We only noticed it cause the pump was making noise and I looked closer and saw this and every few seconds a tiny flash like a spark showed right above the blue part! I’m going to take it out and clean it. It’s unplugged for now until I can remove it. Is there some way to cover it up with something waterproof that won’t allow any electrical currents in the tank? Or should I just get rid of it? This is in my 225 gallon with two puffers and a snowflake moray. Speaking of, that’s probably the culprits fin in the second pic the porcupine puff kept pacing in front of my phone as I was trying to get pics. ;Shifty