In-depth articles on fish keeping, pond care, water quality, and everything in between
The honest answer with the math, the rules, and what most beginners get wrong.
Read article →Ammonia is the number one killer in koi ponds. Here is everything you need to know.
Read article →What to feed your koi in spring, summer, autumn and winter with our top product picks.
Read article →Why the bowl myth is harmful and what a proper betta tank actually looks like.
Read article →White cloudiness, green water, and brown tint all have different causes — find yours here.
Read article →What to look for and which filter types work best for different fish.
Read article →The most important step before adding fish — what it is, how long it takes, and how to do it right.
Read article →Safe tank mates, fish to always avoid, and how to tell if your betta will tolerate company.
Read article →Tank size, water chemistry, rockwork, stocking, and aggression management for Malawi and Tanganyika cichlids.
Read article →Our free AI tools give personalized advice for any fish, any tank.