One caution about PetCo tanks: Only Aqueon products work so if you ever go with a glass canopy you *must* get an Aqueon.
I didn't realize this. I had Marineland tanks and when I had the 20 long and 10 gallon acrylic dividers made I used the Marineland dimensions. Imagine my surprise when I bought two PetCo Aqueon 20 longs and the dividers didn't fit. They are not off by much but instead of sitting flush front to back they have to be slightly angled. Doesn't bother me or three customers with Aqueon tanks who bought them. But I do tell everyone this fact up front.
Just keep that in mind if you buy a canopy in future.
BTW, I had a thought: I could paint the reptile screens white. Or, the actual screen part white and tape off the sides since I might want the black rim. I have used Krylon Fusion paint with no issues even with submerged equipment.
If your dog thinks you are the greatest do not seek a second opinion