Aquarium Filtration Guide: Types, Sizing, Media and Maintenance
How filtration works, how the six filter types compare, and how to size flow for your tank with a worked GPH example.
Practical guides and checklists for routine water changes, gravel vacuuming, filter cleaning, parameter testing, and preventing cloudy water.
How filtration works, how the six filter types compare, and how to size flow for your tank with a worked GPH example.
Identify black beard algae, find what is causing it, and remove it with a safe step-by-step treatment ladder, from trimming to peroxide, liquid carbon and dips.
Use the interactive decision tree to diagnose cloudy water by colour, then apply the right fix. Covers bacterial blooms, green water, substrate dust, tannins, diatoms, post-water-change haze and emergencies.
Cyanobacteria forms a slimy, musty-smelling film in low-flow aquarium zones. It's a bacteria, not algae -- here's how to remove it safely and stop it coming back.
Brown diatom algae is a normal new-tank phase, not a problem. Learn why it appears, how long it lasts, and how Otocinclus and nerite snails help clear it faster.
Green hair algae spreads fast in planted tanks when light exceeds CO2 and nutrients. Manual removal with a toothbrush plus a balanced dosing routine stops it for good.
Green Spot Algae (GSA) forms hard calcified dots on glass and slow-growing plant leaves. Learn why low phosphate causes it and how a razor blade and nerite snails clear it.
Green water is a free-floating algae bloom that turns tank water pea-soup opaque. Find out what triggers it and the fastest proven fixes -- UV sterilizer and blackout.
A practical guide to feeding aquarium fish, including the two-minute rule, how often to feed different species, and how to handle vacation feeding without causing ammonia spikes.
How aquarium microorganisms process nitrogenous waste, and how to interpret cycling readings without treating them as proof of filter capacity.
A scientific but practical guide to the key water chemistry parameters that affect fish health, breeding, and plant growth.
Validated interactive calculators directly relevant to aquarium maintenance & water quality.