Build a calmer, healthier aquarium with numbers you can actually use.
I write Aqualista for fishkeepers who want practical answers before a tank turns cloudy, a filter underperforms, or a stocking plan gets risky. Start with the tool or care path that matches the decision in front of you.
Start with a tank decision
Convert tank dimensions into gallons or liters before dosing, stocking, or moving the tank.
Fish StockingEstimate stocking pressure before adding another fish to the school or community.
Water ChangePlan how much water to change and how the new water affects tank stability.
Load BearingEstimate aquarium weight before placing a tank on furniture or upstairs flooring.
Care paths
Tank size, tank mates, feeding, disease checks, and practical setup mistakes.
Neon TetrasSchool size, water stability, cycling, lifespan, breeding, and disease prevention.
FiltersFlow rate, media order, maintenance schedules, and troubleshooting.
PlantsLow-light choices, substrate, CO2 decisions, and practical beginner setups.
What makes an Aqualista answer useful?
Each guide should get you closer to a decision: what to measure, what number matters, where the risk begins, and when to stop guessing and test the water or change the plan.
Start with the guide that matches your tank
Six hubs hold the rest of the site together. If you only read one page per topic, read these.
Tank size, water parameters, diet, tank mates and the diseases worth knowing.
Aquarium lightingPAR targets, spectrum choice, mounting height and photoperiod for plants and corals.
Aquarium plantsLow-tech species, CO2 decisions, substrate and fertiliser routines that actually work.
FiltrationFilter types, media order, turnover and the maintenance schedule that prevents crashes.
Neon tetrasWater, schooling behaviour, compatibility and the symptoms that mean isolate now.
Tank types and buyingGlass, acrylic, rimless and kit tanks compared by cost, weight and durability.