So I have a 6x3x3 1 inch thick acrylic tank it didnt have a blemish on it when I bought it. I thought It was a great Idea several months ago to add pool filter sand.....Since then its been hard to clean algae especially near the bottom of the tank without scratching the thing...I am fed up with new scratch after new scratch showing up....What should I do to remove it? The conventional plastic dustpan wont work because of how deep the tank is my arms cannot reach....and Im not sure my arms can reach with a siphon hose either....I would hate to have to take 75% of the water out and have to get in there and stress my fish out any ideas?