I bought a 110 gallon acrylic tank used and should have realized the condition was worse that it appeared given the nastiness of the water and the inability to see. Anyways, to make a long story short, I've used micro-surface to sand the inside and out. It improved but not to my level of satisfaction. I tired a 4 step liquid abrasive solution (only to the outside obviously) and again things improved, but not to my level of satisfaction. The front glass still has a cloudy haziness to it (I guess it really could be from the inside, but I'm not convinced). If you look through the sides into the front, you can't see through. I guess I'm wondering if given what I have already done, is this the best it's going to be. I've spent near $100 to get this cleared up and although I could live with the way it is, it just doesn't have that WOW look. My tank is thriving with fish and coral and my lighting system is enough to tan with but the acrylic just isn't doing it justice. Do you have any ideas at all???? Thanks-I'd really appreciate it.