How do you keep algae off of the white sand that is used for decorating...such as pathways through mountains? I had a tank previously that had white sand and had algae all over it:icon_hang. I am trying to avoid that this time round.
If you are not dosing fertz or co2 it shouldn't happen.
If you are I don't think you can avoid this. Small portion of algae are bound to grow on ground. Over time it will just die if you have good maintenance and mature planted aquarium and algae eaters it will be fine.