Initially I bought some apple snail from snailshop and it says on the webpage that the snail only consume dead plant matter and algae. But recently I've been finding lots of damage leaves in my tank. Some looks as if it's being strip down to it's centre vein. So I did a search on yahoo and wahlaa loads of forum actually says that apple snails is notorious for eating live plants and producing lots and lots of excrement contaminating the tank and they are only moderate algae eater.... i.e not the best snail to have in a planted aquaria. I'm now looking to buy some nerite zebra or olive snails as they seemed to have a good review on a lot of the webpage. Mostly claimed that it will clean the glass so well it looks as if it's just been scraped using an algae scraper. Does anyone have any experience on this? I'm having some GDA problem in my tank and maybe a little GSA. Don't want to spent another 10 quid just to regret it further down the line. Anyone with any snail experience would be appreciated.