No argument from me.. I even mentioned Tampa Bay myself. Did business with them years ago, and was quite happy with the product.Check out this vendor. Tampa Bay Saltwater and Gulf Live Rock are true environmental stewards.
From their site, today:
Due to Covid 19 We are no longer accepting or shipping orders. Tampa Bay Saltwater
Gulf Live Rock appears to be shipping... their smallest sample of live sand, 15lbs, $50, shipped 3 day (to me, at least). Too high for me.
Here's an idea... put 2lbs of good, fresh, live sand or small rubble rock in a bag, wet, stick it in a USPS 2 day flat rate box for $8.50, and charge $15 for it. You'd sell TONS of sand.

IPSF is still around, but their selection of 'critters' has dropped dramatically. Companies like Tampa Bay Saltwater, you used to be able to buy a scoop of sand, straight off of the sea floor, overnighted in a bag of water, crawling with life, for a reasonable cost. They're not shipping. Who knows if they ever will again.
I have a refugium running. I use it for macro and hermit crabs. I use it to keep equipment in etc.

