Very nice looking tank you have there.

The only thing I would worry about is adequate filtration. Sharks alone are hard on a system and you are above and beyond that.

Good luck. Interested to see this.

Ps. .. At least you never said 180g. People always post min tank for sharks. :P

Haven't had any real issues with filtration. Due to the tank stocking levels, water changes are required pretty regularly. Tank gets between 200-300 gallons a month changed depending on time constraints. I have managed to do a full 100 gallon with a 6 month old sleeping strapped to my chest!

Nitrates stay around 20 ppm

Forgot to add
 

Also forgot to add.

There is also a thomasii tang in the tank.

And the tank is fed with...

Frozen: Hikari krill, Hikari jumbo mysis ( fantastic product), Hikari regular mysis, and both spirulina and regular brineshrimp. Cocktail shrimp, and
Hikarinsilversides for the Larger fish as well.

Dry: nori, marine a pellets from Hikari, seaweed extreme pellets also Hikari. Tetra colour pellets, and a tiny bit of new life spectrum.

Hey Nate! Neat setup.

nice collection and a cool way to snap a family photo!