Right now I can only attest to its aesthetics and controls. I like it thus far, I can’t speak to plant growth just yet. I chose this one because of my propensity to lean towards island style scapes. I don’t typically plant the entirety of the tank, so lighting it edge to edge with full intensity doesn’t really make sense for my layout. This light will provide the most focus and intensity at the center of my island, and still provide enough spread to light up the edges of the tank to highlight the entire tank and fish. The cost was also a big factor, I potentially would have purchased the two T90’s but it would have cost me well over $400 whereas the single Z400 cost me $225 shipped. The Z400 comes with its own hanger as well, it’s not a separate expense. I would only caution mounting a light to the tank, I don’t like the chance of a stress fracture to the glass.