Care & maintenance
Water changes, feeding, equipment maintenance, seasonal risks.
Deep-diveFilters and aeration for aquariums of every size — the complete guide
How to size a filter to your tank, calculate turnover, pick the right type, and decide if you need extra aeration. From nano cubes to large biotopes.
GuideWater changes: frequency and amount
The single most important maintenance routine. How much to change, how to prep water, what to avoid.
GuideAquarium fish feeding basics
Not every fish eats the same thing. Base diet, feeding schedule, common mistakes.
GuideAquarium lighting: lamps and parameters
Kelvin, lumens, PAR. What matters for plants, what matters for fish, and where the marketing noise lives.
Deep-diveCloudy aquarium water: 6 causes and fixes
Milky cloud, green dust, yellow tint — each kind of cloudiness is a different diagnosis.
Deep-diveWhite scale in the aquarium: identification and removal
Limescale, diatoms, biofilm. Three different problems with three different fixes.
Deep-diveAlgae control: types and how to fight them
Green, black, brown, beard — each algae type has its own trigger and treatment. Identify by sight, fix the cause.
Deep-diveAquarium maintenance schedule: daily, weekly, yearly
What to do daily, weekly, monthly, and yearly to keep your tank thriving for decades. The full task calendar.
GuideAquarium heaters: selection, wattage, failures
One of the aquarium's quiet killers. How to choose, how to size wattage, and why a heater can kill every fish in a single night.
Deep-diveSnail outbreaks: how to control the population
Snails aren't pests — they're an overfeeding indicator. How to identify them, control numbers, and stop new ones arriving on plants.
GuideExtended absence: keeping your aquarium alive
From 3 days to a month: what to prepare, who to ask, what risks to plan for — a step-by-step plan for holidays and trips.