I use tampered glass.
That's the drawback of 1GB ram. Restart phone once a day or once every few days.
No need to clean ram in Androids. Uninstall any ram booster, battery saver or any task killers you installed. Its own memory killing system is more than enough and better.
3rd party apps task killing or ram cleaning makes the ram and battery consumption go up. NEVER use it and your phone will run best.
I am now using full stock rom and i still have this much memory left and no worries about getting ram full, it will free ram automatically when required. Androids keep unused apps in ram too, for faster access, but they are killed automatically once ram is about to get full. 