Fishkeeping Blog
Practical fishkeeping advice, how-tos, and explainers. Every article is written by a real UK aquarist and backed by cited sources from FishBase, peer-reviewed papers, and trusted hobby references.
Practical Fishkeeping Advice
How-tos and guides from an experienced UK aquarist
pH for Tropical Fish: How to Test and Interpret It
What pH do tropical fish need? Learn how to test UK tap and aquarium water, interpret pH with KH and species needs, and avoid unsafe number chasing.
Best Fish for a 30 Litre Tank: Honest UK Guide
How many fish fit a 30 litre tank? There is no universal count. Compare a one-male Betta route, an invertebrate route and current UK welfare limits.
Why Is My Fish Swimming Sideways? Urgent Checks
Fish swimming sideways or lying on one side? Check water, oxygen and temperature first, recognise emergency signs, and find safe UK veterinary help.
Fish Tank Nitrogen Cycle: A Test-Led UK Guide
Understand the fish tank nitrogen cycle, cycle without fish, read ammonia and nitrite tests, troubleshoot stalls and decide when a UK tank is ready.
White Spot on Fish: Identify Ich & Treat It Safely in the UK
Learn what fish white spot may look like, how the Ich life cycle affects treatment, and how to follow a current UK label without unsafe shortcuts.
Tropical Fish Tank Temperature: A Species-First UK Guide
Find a safe tropical fish tank temperature by species, choose a heater, check it independently, and handle UK summer heat or winter cold without guesswork.
Aquarium Filter Guide: Types, Sizing & Maintenance
Compare aquarium filter types, choose capacity without a one-size formula, maintain media safely and troubleshoot low flow in this evidence-led UK guide.
Best Fish for a 100 Litre Tank: UK Stocking Guide
Choose fish for a 100 litre tank using adult size, social groups, footprint and tested water. Compare safer UK stocking routes and species to avoid.
Best Fish for a 60 Litre Tank: UK Stocking Guide
Choose fish for a 60 litre tank using adult size, tank length, social groups and tested water. Compare safer UK stocking routes and species to avoid.
Fin Rot in Fish: Signs, First Aid & UK Treatment
See what fin rot can look like, rule out torn fins, test water and choose a UK-labelled treatment safely. Know when your fish needs an aquatic vet.
Small Tropical Fish: 14 Species Compared
Compare 14 small tropical fish by adult size, tank footprint, group needs, temperature and water hardness, with cautious UK aquarium advice.
Best Tropical Fish for Beginners UK: 5 Picks
Compare five beginner tropical fish for UK aquariums by tested water, adult size, social group and tank fit, with a responsible stocking checklist.
How to Acclimate New Fish (UK Drip Method Guide)
UK guide to acclimating new tropical fish safely. Float, drip, and net method, drip times by species, and what to do in the first 24 hours.
Angelfish Tank Mates: What Works in a Community Tank (UK Guide)
What fish can live with freshwater angelfish? UK guide to angelfish-compatible species, tank size requirements, and what NOT to add.
Aquarium Algae Control: The UK Aquarist's Complete Guide
Cure aquarium algae for good. UK guide to identifying algae types, fixing root causes, and using clean-up crew (otocinclus, amano shrimp, plecos, snails).