Blogs

Marine Fish Buying Guide

Choosing the right marine fish for your aquarium requires understanding their natural behavior, feeding needs, compatibility, and whether they’re reef safe. Below is a breakdown of common marine fish categories to help you make informed decisions. Angelfish (Pomacanthidae) Behavior & Temperament: Generally bold, can be territorial. Larger species may bully smaller fish. Tank Size: Medium to very large (250L – 500L+ depending on species). Compatibility: Semi-aggressive, best with similar-sized fish. Avoid housing with timid species. Feeding: Omnivorous; requires a mix of algae-based foods and meaty foods. Difficulty: Moderate to difficult – some species need advanced care. Reef Safe: Mostly not....

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Common Marine Fish Diseases: Symptoms, Causes, and Treatments

Introduction Marine aquariums are home to some of the most beautiful and sensitive fish in the hobby. However, saltwater fish are prone to diseases that can spread rapidly if left untreated. Identifying symptoms early and applying the right treatment can make all the difference. Here’s a guide to the most common marine fish diseases—including White Spot, Velvet, Black Spot, Uronema, and Flukes—plus how to prevent them. Marine White Spot (Marine Ich, Cryptocaryon) Cause: Protozoan parasite Cryptocaryon irritans Marine White Spot, also known as Marine Ich, is one of the most common and persistent saltwater fish diseases. It spreads quickly, is...

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Common Freshwater Fish Diseases and Problems: Symptoms, Causes, and Treatments

Introduction Healthy fish are the heart of every thriving aquarium. Unfortunately, fish can suffer from diseases caused by parasites, bacteria, or poor water conditions. The good news? Most problems can be prevented or treated if caught early. This guide from Aquaristic Online covers the most common fish diseases, their symptoms, causes, and effective treatments—helping you protect your aquatic pets. White Spot Disease (Ich) Cause: Protozoan parasite Ichthyophthirius multifiliis Symptoms: White cysts on body, fins, and gills (salt-like spots) Rubbing against surfaces Labored breathing Treatment: Gradually raise temperature (if species allows) Treat with Ich medications (copper, malachite green, or formalin) Increase...

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Comprehensive Guide to Marine Aquarium Pests and Their Remedies

Running a marine or reef aquarium is an incredibly rewarding hobby, but it comes with challenges. One of the most common struggles reef-keepers face is the introduction and spread of pests. These organisms, whether algae, invertebrates, or bacteria, can stress or even kill corals, outcompete beneficial organisms, and destabilize your aquarium ecosystem. Below is a detailed guide to the most common marine aquarium pests, how to identify them, what causes them, and the proven methods to control or eliminate them. 1. Aiptasia (Glass Anemones) What It Is: Aiptasia are fast-spreading nuisance anemones that can sting corals, fish, and invertebrates. They...

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Aquarium Algae Guide – Causes, Risks & Remedies

Algae growth is one of the most common challenges in aquariums. While some algae are harmless and even natural, excessive growth can affect water quality, plant health, and the overall appearance of your tank. Identifying the algae type is the first step to solving the problem. Brown Algae (Diatoms) Appearance: A slimy brown coating or thin brown threads on glass, substrate, or decorations.Cause: Most common in newly set up aquariums with high ammonia. Thrives in low light, non-CO₂ aquariums. Triggered by silicates leaching from sand, cheap gravel, rocks, or tap water.Risks: Not dangerous, but unsightly and can smother plants.Remedy: Wipe...

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