YOUR EVERYDAY FIELD GUIDE
Discover the world on the other side of the glass.
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Follow your curiosity.
Fishes / Health
Formalin, a 37 percent formaldehyde solution, is one of the oldest and most effective treatments in the marine aquarist's toolkit, used against external parasites including marine ich, velvet, Brookly
3 min read
Fishes / Health
New aquarium keepers are often surprised that a sealed glass box of water, with no outside contact, can still produce a parasite outbreak. The truth is that almost every parasite problem in a home aqu
2 min read
Fishes / Health
A reef tank looks calm right up until the day it isn't. Marine fish hide illness well, because in the wild, looking weak is an invitation to predators. By the time a fish is obviously sick, the proble
2 min read
Fishes / Health
Ammonia poisoning and ammonia burns are closely related but not quite the same thing: poisoning describes the systemic toxic effect, while burns refer specifically to the visible physical damage ammon
3 min read
Fishes / Health
Spotting a leech attached to a fish is one of the more unsettling discoveries a keeper can make, though the reassuring news is that leeches are genuinely uncommon in tanks stocked with captive-bred fi
3 min read
Fishes / Health
It's a fair question for anyone new to the hobby: if a tank is cycled, filtered and tested regularly, where do parasites even come from? The honest answer is that almost every marine parasite arrives
2 min read
