The light fixture you need will depend on the requirements of the plants you intend to keep (if you do a planted fw
setup). Otherwise, the light fixture that comes with the tank will do just fine. I have no experience with SeaClear, but I do have to warn you that acrylic scratches very easily. As for filters, it really depends on if you want a cannister filter or a hang-on-back (HOB
) filter. Powerheads/pumps depend on what kind of flow your tank inuabotants prefer.