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Water Testing

By finatics_dev / November 17, 2025

Bring a sample—get fast, accurate results and a simple plan to keep your fish thriving.

Custom Tanks

Starter Setup

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Under The Sea Aquatics is your one-stop aquatic pet shop for marine and freshwater fish, invertebrates, and all aquatic essentials. At Under The Sea Aquatics, we bring underwater life closer to your home with quality products and expert tips. Shop a wide range of marine and freshwater fish, invertebrates, and aquatic plants at Under The Sea Aquatics — along with everything you need to create and maintain a thriving aquarium.

45 Scott St W, St. Catharines, ON L2R 1E1

+16477005740

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