About
Tucked away in Placentia, California, Reef Factory US has earned a devoted following among Orange County's saltwater aquarium community — and it's easy to see why. Owner Sean runs a tight ship, maintaining a clean, well-organized store where dead fish in display tanks are essentially unheard of. That kind of attention to livestock health speaks volumes about how things are run behind the scenes.
The store's strength is its coral selection. Sean stocks a wide range of frags spanning both trendy new varieties and old-school classics, giving reef builders plenty to work with at prices that won't break the bank. The fish selection is equally impressive, with a vast and rotating inventory of saltwater species that keeps regulars coming back to see what's new.
It's worth noting that Sean doesn't quarantine incoming fish — but that honesty is reflected in the lower price point, and experienced hobbyists will appreciate the transparency. What truly sets Reef Factory apart is Sean's role as a hands-on mentor to his customers. Multiple reviewers describe him as someone who guided them through the challenging early stages of reef keeping, helped them set up their tanks, and genuinely celebrates their successes.
Staff member Joey rounds out the team with solid knowledge of his own. This isn't a store where you grab a bag of fish and leave — it's a place where conversations happen, problems get solved, and hobbyists grow. The store recently underwent a renovation that has customers buzzing, and the refreshed space matches the energy Sean brings to the business.
For anyone running a reef tank in the OC area or looking to start one, this is a destination worth the drive. The combination of healthy livestock, vibrant corals, competitive pricing, and genuine expertise from Sean and his team has earned Reef Factory its reputation as one of the best saltwater shops in Orange County.
What they offer
Livestock, services, water
- Livestock & products
- Services
- ConsultationTank Setup
- Specializes in
Highlights
What makes them special
- Extensive coral frag selection including both new and old-school varieties at competitive prices
- Exceptionally clean shop with healthy livestock in display tanks
- Owner Sean provides hands-on guidance and tank setup assistance
- Recently renovated store with a refreshed layout
- Transparent pricing that reflects no-quarantine policy on fish
From keepers
Customer reviews
“Been coming here for years - great for saltwater aquarium supplies, fish and coral. Sean and Joey are very knowledgeable”
— Danielle Mastromatteo5.03 months ago“Cool place”
— Eric Wattana5.0a year ago“Sean is a great guy and can order you any equipment you need for a good price. It should be noted that he does not quarantine his fish, but that is reflected in the low price so don’t worry. Just be advised to quarantine fish. He has lots of frags of corals both new and old school”
— Bruh Man5.0a year ago“Nice clean shop. Since I've been shopping at the reef factory I have never seen no dead fish and any other display tanks . This place is on top of it. love it recommend it for everyone. Not to mention that his prices are very reasonable. Stop by talk to Sean hes a great guy.”
— Matt Jones5.0Edited a year ago“Best shop in OC!!! Recommend”
— cubyh5.0a year ago“Great salt water fish store , Sean is very helpful and knowledge , with good selection of fish and corals , highly recommend this shop , and great guy !!”
— Pat H5.0Edited a year ago“This store is my second home. Sean has shared so much knowledge with me to have a successful tank. He guided me through the hard times and is always excited to hear about the good times! The selection of fish is vast. Corals vibrant. Shop clean. It's everything you want in a reef shop. Sean helped my setup my tank and always has the time to help with my questions. The new guy working there. It's always a pleasure dropping in to see what's new ans exciting. The recent renovation to the store is really great. Can't wait to see what comes next!”
— Rob Warburton5.0a year ago
Reference
Frequently asked questions
Note — Store information and services may change. Always call (657) 566-2778 to confirm current availability, hours, and services before visiting Reef factory us.