Wow shawn I have to say I love those rays what hybrid are they? I'm kinda derailing my own thread anyways I'm not worried about any aggression from any fish with my current stock. For filtration I have 2 xxl sponges one with an air pump one with a big powerhead, and a 100g sump with 20L pond matrix and filter socks and I'm looking into maybe 55lbs of ceramic rings. I think I need to pick up a 500w titanium heater to go with my 1000w since this is my first winter with this tank and it's running like 77 right now but the heater is always running
