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An Amazon sword can reach roughly 16–20 inches (40–50 cm) when fully established, making it one of the most useful background plants for a medium or large freshwater aquarium. Amazon sword care comes down to enough root space, steady nutrients, moderate light, and keeping the crown above the substrate. This guide covers planting, substrate, lighting,…
Java moss is one of those aquarium plants that looks almost indestructible in a store tank. Give it a few weeks in a new aquarium, though, and you may discover that keeping it healthy is a little more complicated than simply dropping it into the water. The good news is that java moss is extremely…
Java fern is one of the easiest aquarium plants to grow, especially when you want a hardy plant that can attach to wood or rock instead of being planted in the substrate. In this Java Fern Care Guide, you’ll learn how to provide the right light, water, nutrients and placement, plus how to deal with…
Goldfish carry more misinformation than almost any other pet fish, and some of it runs in directions people don’t expect. A few of the most repeated “facts” about goldfish are flatly wrong, while a few of the confident claims made to correct them turn out to be more contested than they first appear. This guide…
Goldfish health problems trace back to a small handful of root causes far more often than owners expect, and nearly all of them connect to water quality, tank size, or diet. In practice, most of what looks like a mysterious illness is actually one of a handful of well-documented conditions, several of which get confused…
Goldfish tank setups fail more often from undersizing than from any disease or water quality issue covered elsewhere on this site. In practice, most of what goes wrong traces back to a tank bought for the fish’s current size rather than the size it’s going to reach. This guide covers what equipment a real goldfish…