Is there any particular reason that you think your heading for trouble?
The only time that I clean my entire substrate is when I'm completely redoing my aquascape. Otherwise the plants use the debris as nutrients, no need to worry about what you can't syphon out.
As far as the rocks go if they do get covered in algae, just remove them from the tank and scrub them with a brush. Other then that keeping some algae eaters will help control the algae to a certain point. |