you'll need to change the tubes to grow plants. blue lights encourages compact growth in some plants and also a flowering response, but is no good for growing plants under.
there are many colour spectra you can choose from; common ones include
6500K
6800K
10000K
18000K powerglo.
Each tube does a slightly different job, so think of what plants you want to grow and then match your tubes accordingly.
if you like the green plants, 6500K - 10000K will be sufficient.