DUSTYFISH
Aquarium guides, fishkeeping tips, and the calculators behind a healthy tank.
From sizing your tank and checking your stocking to picking the right heater, planning a water change, measuring your substrate, and dosing aquarium salt, DustyFish pairs free hands-on fishkeeping calculators with practical guides and a richly illustrated museum. Keep healthier fish, one clear tank at a time.
Aquarium Tools & Calculators
Free calculators for every fishkeeper — aquarium volume calculator, fish stocking calculator, heater wattage calculator, water change calculator, substrate calculator, and aquarium salt dose calculator.
Aquarium Volume Calculator
Work out how much water your tank really holds from its dimensions — in US gallons, litres, and cubic units — plus a net volume that allows for substrate, décor, and headspace
Fish Stocking Calculator
Check whether your tank is understocked, well stocked, or overstocked using the inch-per-gallon rule — add each species and count to see your total stocking level at a glance
Aquarium Heater Calculator
Find the right heater wattage from your tank volume, room temperature, and target temperature — rounded up to the nearest standard heater size you can actually buy
Water Change Calculator
Work out how much water to remove for a partial change and how much dechlorinator to add to the fresh tap water going back in — for a safe, consistent maintenance routine
Aquarium Substrate Calculator
See how many pounds and kilograms of gravel or sand you need to cover your tank's base to the right depth — enter the footprint and depth and get the weight to buy
Aquarium Salt Calculator
Get the right dose of freshwater aquarium salt for your tank — general tonic, stress relief, or an ich treatment level — in tablespoons and grams based on your water volume
Aquarium & Tropical Fish Museum
Wander an immersive museum of the home aquarium — the freshwater fish from betta to discus, the aquarium plants of a planted tank, the equipment that keeps the water alive, and the corals and clownfish of the marine reef, each in its own gallery, so you can get to know the world of fishkeeping: the fish, the plants, the gear, and the craft of a healthy tank.
Tour the museum →From the Journal
Fresh guides on freshwater fish and fish care, tank setup and water quality, aquarium plants and aquascaping, plus practical tips for keeping a healthy, thriving aquarium.
The Science of Tank Lighting: Enhancing Aquascapes with Precision and Purpose
The Science of Tank Lighting: Enhancing Aquascapes with Precision and Purpose Tank lighting transcends mere decoration—it is a critical element shaping the health, beauty, and functionality of any aquarium. Whether…
The Ultimate Filter Maintenance Manual: Keeping Your Water Systems Pristine
The Ultimate Filter Maintenance Manual: Keeping Your Water Systems Pristine In an era where water quality is paramount, maintaining your filtration system isn’t merely optional—it’s essential for health, efficiency, and…
The Art and Science of Fish Feeding: Mastering Nutrition for Aquatic Health
The Art and Science of Fish Feeding: Mastering Nutrition for Aquatic Health Fish feeding is an essential aspect of aquarium care that often goes overlooked by new hobbyists. While many…
The Enigmatic Allure of Exotic Fish: Unveiling Hidden Oceans’ Treasures
The Enigmatic Allure of Exotic Fish: Unveiling Hidden Oceans’ Treasures In the vast tapestry of marine life, few subjects captivate as profoundly as exotic fish. These mesmerizing creatures, often found…
Understanding Water Quality: A Deep Dive into Its Importance and Impact on Life
Understanding Water Quality: A Deep Dive into Its Importance and Impact on Life Water is the essence of life, yet its quality determines whether it sustains thriving ecosystems or becomes…
The Ultimate Deep Dive Into Tank Cleaning: Mastering Hygiene For Optimal Performance
The Ultimate Deep Dive Into Tank Cleaning: Mastering Hygiene For Optimal Performance Tank cleaning is an essential practice that ensures longevity, efficiency, and safety across various industries ranging from water…
Keep Learning
Practical know-how on cycling a new tank, planning water changes, and choosing equipment, plain-language explainers on stocking, heating, and water chemistry, and seasoned tips for first-time and experienced fishkeepers alike — everything you need to dig deeper and keep thriving fish.
Visit the Learn hub →