Sea of Marvels Inc

Sea of Marvels Inc. in North Liberty, Iowa is the passion project of Hung (also referred to as Han by some customers), a saltwater aquarist whom multiple reviewers call one of the most experienced in the entire state of Iowa. His specialty is reef aquariums — the store houses several display reef tanks that have been running for over a decade, serving as living proof of his expertise.

Hung personally travels to wholesalers to handpick the fish he stocks, a level of dedication that's rare for any local fish store, let alone one serving the Cedar Rapids and Iowa City corridor. The focus here is firmly on saltwater, with reviewers praising the quality and variety of marine livestock and supplies. Hung offers tank maintenance services and is known for generous, unhurried consultations — customers describe him as always happy to answer questions, whether about setting up a first saltwater tank or troubleshooting an established reef system.

His pricing is noted as very reasonable, and the overall vibe is more hobbyist workshop than retail chain. Several reviewers call it the best aquarium supply store in the Cedar Rapids–Iowa City area. There are a few things prospective visitors should know.

Sea of Marvels operates on very limited hours — primarily Saturdays from noon to five — and accepts cash only. Multiple reviewers have driven significant distances only to find the store closed during posted hours, a recurring frustration that shows up again and again in the reviews. Calling ahead can be hit or miss, as some report the phone number being out of service.

If you're planning a trip from Moline, the Quad Cities, or Coralville, it's worth confirming through social media or other channels before making the drive. When you do catch Sea of Marvels open, the experience is worth the effort. Hung's decade-plus reef displays are genuinely impressive, the livestock is healthy and carefully sourced, and the one-on-one expertise is the kind of thing you simply can't get from a big box store.

Just bring cash and double-check the hours.