The best alternatives to BioGlo are Jellyfish Aquarium, Retype, and MOAI. If these 3 options don't work for you, we've listed a few more alternatives below.
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Notion— Get over $6,000 worth of Notion + unlimited AI, for free
MOAI takes your aquarium to next level by adding a robot helps keep your fish tank clean, while also allowing users to capture and share aquarium wonders with friends.