i would just wait until you can either build a canopy or find one to fit it, that seems like it would be the best looking and most secure option.
and by the way i wouldnt leave the tank resting on that pallet thing like it is, it isnt good for the whole weight of the tank to just be resting on the middle of the bottom glass like that, if you have two of them you could put one at each end so the weight is on the outer edges but i see it possibly straining the glass or even breaking with it all in the middle like that