Novus acrylic polish works really well.
What is the thickness of that acrylic? Looks almost like 1/4" on the top...
Thats really risky. The top takes a LOT of the force. My tanks got 1/2" and the holes are about the same size as yours, and I have had to scab patch 3 cracks so far. Just be ready. Honestly if the acrylic does bow more than 1/2" out in the front/back or on the top, I would run to an acrylic shop and get some reinforcements, ASAP.
Just my 2 cents, I'd hate to see it splode.
What is the thickness of that acrylic? Looks almost like 1/4" on the top...
Thats really risky. The top takes a LOT of the force. My tanks got 1/2" and the holes are about the same size as yours, and I have had to scab patch 3 cracks so far. Just be ready. Honestly if the acrylic does bow more than 1/2" out in the front/back or on the top, I would run to an acrylic shop and get some reinforcements, ASAP.
Just my 2 cents, I'd hate to see it splode.