not sure what size tank you have but it doesnt really matter i guess... Either way you would be better off with a 6 bulb ati power module than an 8 bulb nova. I reacently bought a 6 bulb nova and Im pretty sure the 4 bulb wavepoint fixture i had was brighter. As much as I kicked and screamed and tried every other cheaper light fixture before realizing i should have just bought an ati, Ive finally come around. Do yourself a favor, if your trying to keep sps anyway, and just buy an ati or tek fixture. There are other high end fixtures out there, geissman, sfigoli, etc... but an ati power module packs all the punch you need and is def a cut above the tek and completely blows the nova away.