Ive almost completed a plywood tank that measures 8'x4'x4'. im quessing around 750 gallons. looks awesome birch with a walnut stain. anyway to cut to the chase i was thinking of putting some nurse sharks in there or maybe building a huge reef over time. i propagate my own corals so in a years time i could have it looking nice. dont really know what i will do yet. i spend a fortune on sea salt. i sometimes catch it on sale and stock up i was just wondering if ay1 knows of a website or an alternative for sea salt. i know some people are thinking if i can get a 750 gallon tank i could buy some salt but a $ saved is another fish. thanks for any input.