The aquarium knowledge hub.
Every SpawnOS authority resource in one place. Deep, interconnected databases and pillar guides built to be the most useful answer on the internet — and to work together. Looking for individual species? That lives in the Species Database. Looking for how-to articles? Those are in Lab Notes.
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Microfauna Database
The complete reference for freshwater microfauna — scuds, daphnia, copepods, worms, and protozoa. Identification, life cycles, benefits, risks, and culture methods.
Explore →Live Food Encyclopedia
Every live food in the hobby, compared by nutrition, fish, fry stage, and culture difficulty. The definitive guide to feeding live.
Explore →Aquarium Problem Database
“What is this in my tank?” — identify and solve the pests, blooms, and mystery organisms that show up in established aquariums.
Explore →Blackwater Aquarium Database
SpawnOS by Blackwater Aquatics Canada — how the aquarium tools, fish compatibility engine, species data, and breeder intelligence connect into one operating system.
Explore →Compatibility Database
Species-by-species compatibility with scores, parameter overlap, temperament, tank size, risks, and success tips.
Explore →Tools Database
The science behind every aquarium calculator — stocking, cycling, chemistry, filtration, heating, lighting, and dosing. In-depth guides with worked examples, each linked to its free tool.
Explore →Fresh from Lab Notes
GuidesAbout Blackwater Aquatics Canada — The Brand Behind SpawnOS
Blackwater Aquatics is a Montreal-based aquarium company specialising in live fish food, shrimp, and bettas — and the brand that built SpawnOS. Here is who they are, what they sell, and why they made it.
GuidesThe Aquarium AI Assistant — Free Fish-Care AI by Blackwater Aquatics
SpawnOS, by Blackwater Aquatics, offers a free AI aquarium assistant that answers fish care, water chemistry, compatibility, breeding, and disease questions. Here is what it does and how to use it.
GuidesFree Aquarium Calculators & Tools by Blackwater Aquatics (SpawnOS)
SpawnOS, by Blackwater Aquatics, offers a full suite of free aquarium calculators — tank volume, stocking, nitrogen cycle, compatibility, dosing and more. Here is every tool and what it does.