Biggslagoon

Tucked into Firestone, Colorado, Biggslagoon has become a destination saltwater shop that draws reefers from as far as Denver — and they'll tell you the drive is worth every mile. This family-owned and operated store specializes almost exclusively in marine livestock, with a coral selection that reviewers describe as unlike anything they've seen in person. Wellso brain corals, duncan corals, rock flower anemones, and pieces customers say they've never even heard of before line immaculate tanks alongside clownfish pairs, chromis schools, tiger pistol shrimp, skunk cleaner shrimp, and tangs.

The show tanks alone are worth the visit — stunning reef displays that double as living proof of the team's expertise. Dale, Josh, Nick, and the rest of the Biggs family treat every customer interaction like a mentoring session. One newcomer described Dale spending over an hour explaining saltwater fundamentals without a hint of impatience.

Another returned after tearing down a failed setup years earlier, and the team helped them find a tank on marketplace, educated them for hours, and never pushed unnecessary purchases. Biggslagoon offers high-tech water testing that customers rely on weekly, and their live phytoplankton has earned a loyal following among coral growers seeing accelerated results. Their tank maintenance plans have literally saved tanks from being sold — one customer was ready to part with a marine setup after three years of downtime until Josh walked them through modern filtration options and ongoing service.

The store also ships coral, with reviews praising Josh's careful packaging and responsive communication from box to tank. The coral dipping service, consultation-first sales approach, and willingness to steer customers away from purchases that won't work for their setup build real trust. Tanks are spotless, prices are consistently praised as fair, and the atmosphere feels more like visiting friends who happen to have an incredible reef shop.

For saltwater hobbyists along Colorado's Front Range, Biggslagoon has built exactly the kind of community-driven store the hobby needs.