I really like my DIY ebb & flow table its on a Harbor Freight cart with wheels so I lowered it so  I enough to a few inches above the 27 gallon tote I use for a res so I can lift the lid to peak inside. I added a site level to the tote and I can use it to check PH. Anyway its about 34 inches tall total and I have a SCROG net on top. That leaves me almost 5 feet for light and plant. An 18 inch tall bud on a SCROG happens never for me so far.