[mike31154]

So this is a very long, narrow tank, 8 foot 32 gallons? Definitely a challenge in all respects, flow, lighting, stocking..... T5 lamps are only going to get more difficult to find in the proper spectrum in the future, but you're already kind of finding that out! A tank like this is simply screaming for a LED ribbon or two. Still a challenge to find LED strips with sufficient punch for salt water, but IMO you may as well try to convince the client to jump on the LED bandwagon now, rather than later. Some SMD5630 strips might do the trick to get the tank running.

EDIT: So I did a search on these tanks & see that everything is integrated, including the T5 fixture. These look like they're more suited to being freshwater systems. But the client wants salt? Do they have any salt experience? All well & good, but looks like a recipe for disaster to me.