Could I have a trio of platies (1M 2F) in a ten gallon with 2-3 otos? My water is pretty hard with a pH of 8.2 and a Gh of 7. I need something to clean any algae off of the plants (I sell them to the LFS and they don't like plants with any algae). I would give them a mix of Hikari Sinking wafers (would algae wafers be better?, these have a mix of veggies and meat in them), the occasional cucumber, and any algae they find. A yes/no and any other advice would be greatly appreciated. Thanks!