So me and my boyfriend have a reef tank set-up at my apartment away at school. We have been home for the summer and went up every week to check on it/fill up the bucket for the top-off. The only thing we have been slacking on is scraping off the coralline algae from the front glass. It has pretty much gotten to the point that we cannot even SEE into our 40g tank anymore, and we are dreading breaking our arms to scrape it off. We only have the cheapest scraper we could find, and are looking for an upgrade. What is the best tool to get coralline algae off?