https://fishkeepingguide.comNew source-linked fishkeeping guides and species notes.enhttps://fishkeepingguide.com/aquarium-plants-for-beginners/https://fishkeepingguide.com/aquarium-plants-for-beginners/Tue, 10 Nov 2026 12:00:00 GMTSeven freshwater aquarium plants chosen for different planting jobs, with placement, upkeep and the conditions that would make each a poor fit.https://fishkeepingguide.com/choosing-aquarium-fish/https://fishkeepingguide.com/choosing-aquarium-fish/Tue, 10 Nov 2026 12:00:00 GMTBuild a realistic fish shortlist using adult size, water needs, behaviour, diet and long-term care.https://fishkeepingguide.com/cloudy-aquarium-water/https://fishkeepingguide.com/cloudy-aquarium-water/Tue, 10 Nov 2026 12:00:00 GMTWork through cloudy aquarium water using fish behaviour, timing, source-water observations and water tests. Includes cloudiness after a water change and when to seek help.https://fishkeepingguide.com/aquarium-nitrogen-cycle/https://fishkeepingguide.com/aquarium-nitrogen-cycle/Tue, 10 Nov 2026 12:00:00 GMTUnderstand ammonia, nitrite, biological filtration and the evidence that matters before adding fish.https://fishkeepingguide.com/clean-aquarium-filter/https://fishkeepingguide.com/clean-aquarium-filter/Tue, 10 Nov 2026 12:00:00 GMTA practical filter-maintenance sequence: identify media, clear restricted flow, protect established biological media and verify the restart. Follow the instructions for your filter model.https://fishkeepingguide.com/first-aquarium/https://fishkeepingguide.com/first-aquarium/Tue, 10 Nov 2026 12:00:00 GMTA practical first-aquarium plan covering fish requirements, space, equipment, water preparation and the checks before stocking.https://fishkeepingguide.com/fish/freshwater-angelfish/https://fishkeepingguide.com/fish/freshwater-angelfish/Tue, 10 Nov 2026 12:00:00 GMTA tall South American cichlid whose adult shape, feeding opportunities and breeding behavior change the community plan.https://fishkeepingguide.com/fish/betta-splendens/https://fishkeepingguide.com/fish/betta-splendens/Tue, 10 Nov 2026 12:00:00 GMTA surface-breathing tropical fish whose shelter, flow and social arrangements deserve as much attention as its fins.https://fishkeepingguide.com/fish/ocellaris-clownfish/https://fishkeepingguide.com/fish/ocellaris-clownfish/Tue, 10 Nov 2026 12:00:00 GMTA saltwater fish with a social hierarchy and a defended home area. Its familiar appearance does not remove the demands of a marine aquarium.https://fishkeepingguide.com/fish/common-comet-goldfish/https://fishkeepingguide.com/fish/common-comet-goldfish/Tue, 10 Nov 2026 12:00:00 GMTAn active, long-lived fish that needs a plan for its adult body, swimming room and substantial waste load.https://fishkeepingguide.com/fish/guppy/https://fishkeepingguide.com/fish/guppy/Tue, 10 Nov 2026 12:00:00 GMTA small livebearer whose social plan and likely offspring matter as much as color and tail shape.https://fishkeepingguide.com/fish/neon-tetra/https://fishkeepingguide.com/fish/neon-tetra/Tue, 10 Nov 2026 12:00:00 GMTA small South American shoaling fish whose group, cover and protection from larger fish belong in the plan from the start.https://fishkeepingguide.com/seachem-flourish-vs-excel/https://fishkeepingguide.com/seachem-flourish-vs-excel/Tue, 10 Nov 2026 12:00:00 GMTCompare Seachem Flourish and Flourish Excel by declared nutrients, carbon role, label limitations and plant cautions. Includes alternatives for different nutrient needs.https://fishkeepingguide.com/freshwater-or-saltwater-aquarium/https://fishkeepingguide.com/freshwater-or-saltwater-aquarium/Tue, 10 Nov 2026 12:00:00 GMTCompare freshwater and marine keeping by livestock, water preparation, testing, equipment and ongoing care.https://fishkeepingguide.com/purigen-vs-carbon/https://fishkeepingguide.com/purigen-vs-carbon/Tue, 10 Nov 2026 12:00:00 GMTCompare Purigen and activated carbon by their intended job, tannin removal, medication cautions, maintenance and situations where neither is the right first step.https://fishkeepingguide.com/aquarium-care-routine/https://fishkeepingguide.com/aquarium-care-routine/Tue, 10 Nov 2026 12:00:00 GMTDaily fish checks, testing, water changes and filter care, with a practical log that adapts to the aquarium.https://fishkeepingguide.com/best-aquarium-test-kit/https://fishkeepingguide.com/best-aquarium-test-kit/Tue, 10 Nov 2026 12:00:00 GMTCompare API, NT Labs and Tetra aquarium test kits by readings, methods and missing tests. Includes an interactive coverage checklist and buying criteria.https://fishkeepingguide.com/fish-warning-signs/https://fishkeepingguide.com/fish-warning-signs/Tue, 10 Nov 2026 12:00:00 GMTA calm first-check sequence for distressed aquarium fish, with urgent escalation and a useful record for a fish veterinarian.https://fishkeepingguide.com/substrate-volume-and-bag-sizes/https://fishkeepingguide.com/substrate-volume-and-bag-sizes/Mon, 09 Nov 2026 12:00:00 GMTConvert a substrate volume into whole bags using the label's units. Understand density ranges, leftovers, prices and unknown shipping.https://fishkeepingguide.com/measuring-your-aquarium/https://fishkeepingguide.com/measuring-your-aquarium/Mon, 09 Nov 2026 12:00:00 GMTMeasure your aquarium's inside footprint, choose a flat or sloped depth, and calculate substrate liters with clear worked examples.https://fishkeepingguide.com/substrate-shopping-checklist/https://fishkeepingguide.com/substrate-shopping-checklist/Mon, 09 Nov 2026 12:00:00 GMTBring your measured footprint, required substrate volume and bag-label questions to a dealer. Compare real quantities and costs before buying.