Hello, I've been researching for many hours, online, youtube, etc. I have several planted tanks, & am ready to scape my new 20 gallon clear Waterbox, & I have my second 33 gallon Waterbox will be arriving on fri. Anyway it's been frustrating to find a decent light that fit the sizing. The 20 gallon is more like a cube. Which is disappointing. Anyway it measures 17.7 x 17.7 x 19. The 33 gallon measures 23.4 x 19.7. As they are deeper need to make sure the plants will be successful. Help appreciated.