I have a 45g tall that is about 25" tall. When its is on the stand, and with the extra 4 inches that the canopy adds I can barley reach the gravel with the tips of my fingers standing flat footed at 5'11" tall. I simply bought a small folding step stool that can fit in the closet. From the first step I can easily reach the bottom and half the aquarium with out moving it, and from the top step I can reach the whole bottom area. It's not just the tank size but also the height of your stand and canopy/hood that will affect your reach. The step stool solved the problem for me. Good luck.