I figured out the 'reflection' problem with mine after I noticed an increase in attacking the glass after I cleaned the algae from the sides....and if I turned off the room lights at night when the tank light was on. Instant oscar frontal assault! I solved the night time thing by leaving a small 15 watt light on in the living room. My oscar tank is in the living room a couple of feet from the tv. sometimes the oscar likes to watch tv!