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water bridges

  1. 2 Tanks, 1 Water Bridge?

    Freshwater and Tropical Fish
    It's just a random thought. . . I have two 3 gallon aquariums (one completely empty and the other with 5 pygmy cory and two guppy endler). Originally I was going to purchase a larger tank but couldn't find one that wouldn't involve giving an arm or leg too. And my mum has said I can't get...