Also.

Reeds sometimes like to bask under the light during the daytime so try to design it so there are some taller plants/features that they can do this from.
the more comfortable they are in the setup the more they will be out during the day...especially if they are fed then.

During the daytime they are mostly higher in the tank. Most set ups used are vertical but a taller horizontal tank will work with plants as mentioned above....vertical tanks give more space for them to hang out above the substrate and more vertical space to see them.