Eb0la11's 165G Reef Tank Build

[Eb0la11]

Thanks Parkins. Some good tips in there. I appreciate that! I'll visit wosely's to see if they have gate valves any cheaper, and if not I'll bite the bullet and buy the one I need.

So Im now almost ready to start plumbing and have a new question. How tall should my emergency drain be in relation to my overflow water height? Also, how can I estimate where this line will be when my tank is not filled yet? I assume the emergency drain will be above the water line but below the top of the tank. Is that correct?

Also, is ABS piping reef safe/non toxic as well?