Hydro Habitats Reference Library

Aquarium Guides

Explore practical, source-backed guides for aquarium livestock, plants, corals, equipment, water quality, and common problems.

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Browse 9 guide categories.

120 published guides available.

Guide category

Equipment

8 published guides

Filtration, lighting, heaters, pumps, tanks, and other aquarium equipment.

Browse Equipment

Guide category

Water Quality

8 published guides

Water testing, the nitrogen cycle, pH, hardness, and nitrogen compounds.

Browse Water Quality

Guide category

Common Problems

24 published guides

Aquarium troubleshooting guides for identifying problems, checking causes, and planning safer next steps.

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Guide category

Freshwater Fish

21 published guides

Freshwater fish profiles for planning stocking, feeding, and everyday care.

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Guide category

Freshwater Plants

12 published guides

Plant profiles covering placement, lighting, growth, and ongoing care.

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Guide category

Freshwater Invertebrates

6 published guides

Freshwater shrimp and snail profiles, including setup, feeding, and compatibility.

Browse Freshwater Invertebrates

Guide category

Saltwater Fish

18 published guides

Marine fish profiles covering system needs, feeding, and tankmate compatibility.

Browse Saltwater Fish

Guide category

Coral

14 published guides

Coral profiles with lighting, flow, placement, feeding, and compatibility topics.

Browse Coral

Interactive aquarium tools

Plan with practical calculators

Estimate sump reserve, pump head loss, alkalinity conversions, filled weight, water-change volume, and aquarium turnover.

Explore aquarium tools

Reference standards

Built for careful, practical reading

Explore care profiles for fish, invertebrates, plants, and corals; practical equipment and water-quality guidance; and troubleshooting steps for common aquarium problems.

Plan your system

Build an aquatic environment around your space

Hydro Habitats designs, installs, and maintains freshwater and saltwater aquariums throughout New Jersey.

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