If you can read all five items on this key, you didn't buy this shirt — you earned it. FIG. 1 is a clean mid-century cutaway of a working saltwater reef tank system: display tank up top, sump and skimmer below, every part called out in a numbered legend. And item 5? Any reefer already knows why the alk swing is not shown.
Printed on a Bella+Canvas 3001 unisex staple tee — soft ringspun combed cotton with a smooth retail fit that holds its shape wash after wash. The blueprint-white linework and deep reef-blue display tank read crisp and bold on dark fabric, with signal-amber callout numbers for that owner's-manual detail. Available in 13 colors, from true black through navy, forest, and heathered greys.
A quiet flex for the reef keeper in your life — a build-completion marker, a tank-anniversary gift, or the shirt they wear to the next frag swap.
Made to order and printed just for you, so it's produced fresh (typically 3–7 business days) before it ships. Shipping times vary by location. Care: machine wash cold inside out, tumble dry low, do not iron directly on the print.
Drafted like the manual. Worn like a badge.
