Goldfish Care Guide 2026: Tank Size, Filtration, Water Changes & Lifespan
Learn how to care for goldfish properly, including tank size, filtration, cycling, water changes, feeding, lifespan, and common beginner mistakes.
aquarium
9 total posts
How to Tell If Your Fish Tank Is Cycled: Read Your Water Test Results
Read ammonia, nitrite and nitrate test results to tell if your aquarium is cycled. Learn why 0/0 readings are not proof, how to read cycling patterns, and how to confirm the biofilter works.
How to Add New Fish to an Established Aquarium Safely
Learn how to add new fish to an established aquarium without stressing your current fish. Covers bio-load, compatibility, quarantine, acclimation, aggression, and first-week monitoring.
White Stuff Floating on Top of My Fish Tank: Biofilm, Protein Film, or Mineral Deposits?
White film, oily sheen, fluffy fragments, or hard white crust on your aquarium surface — learn to identify each cause, whether it is dangerous to fish, and how to remove it fast.
Tiny White Things or Bugs Swimming in My Fish Tank: Copepods, Ostracods or Detritus Worms?
Tiny white dots or thread-like worms swimming in your aquarium are usually harmless microfauna such as copepods, ostracods (seed shrimp), or detritus worms, not fish parasites. Learn how to identify them, tell them apart from ich, and reduce their numbers naturally.
What Are the White Particles or Specks Floating in My Fish Tank?
Tiny white particles floating in your fish tank are usually harmless. Use this quick identification guide to tell biofilm, detritus, and microfauna apart from ich.
Best Fish for Basement Aquariums: Species That Thrive in Cooler Environments
Basement aquariums naturally run cooler at 65-70°F. Choose cold-water species like White Cloud Minnows, Goldfish, and Cherry Shrimp for energy-efficient setups, or learn heating strategies for tropical fish.
Aquarium Salt Dosage Guide: 3 Treatment Levels for Freshwater Fish
Learn the correct aquarium salt dosage for treating sick freshwater fish with a tiered three-level system. Avoid overdosing and protect sensitive species.
What Is the White Fluffy Stuff Floating in My Aquarium Water?
White cotton-like flakes floating in your fish tank are usually harmless bacterial film. Learn what causes this biofilm, why it appears after filter cleaning, and how to clear it safely.