Most fish owners light their coral tanks in a way that feels right. Some do it in a way that makes their tank look pretty. Others are looking for ways to benefit their corals. But how much light exactly do corals need? This is a question I have asked myself countless times in the past. …

Most fish owners know that fish do not do well with light that lasts all night. Since they have no eyelids, they are not able to sleep. But little is known about corals and how they react when exposed to light all night, be it blue, white, red, or green. Since this has occupied my …

Most aquarists know that blue light is the ideal choice for corals. But not everyone likes it or how their reef tank looks in it. This automatically raises a question that I have personally asked myself countless times in the past: Can we just use white light in a tank containing corals? In this article, …

Corals are known to benefit from blue light, as it penetrates the water effectively and allows zooxanthellae to perform photosynthesis. However, less is known about other colors such as green. How do corals react to this color? Can aquarists use it in their reef tank? These are questions I asked myself all the time when …

We all know that aquarium corals do great with blue lights. However, less is known about red light and its role in coral growth. There is a common debate claiming that red light contributes to the photosynthesis of algae, and is therefore essential for corals as well. However, some researchers argue just the opposite. So, …

We all know that blue light is a common practice in reef tanks. Some aquarists even claim it makes their corals glow brightly. But how do corals actually react to blue light? Is it good to use this color in a coral tank? These are the questions I constantly asked myself in my early days …

Almost every aquarist will experience cloudy water in their fish tank at some point. This issue can be quite discouraging, as you can hardly see the inhabitants of the tank or its decorations. From my experience, this topic can be split into two common scenarios: So, in this article, I will list the most common …

We all know how aquarium fish often open and close their mouths repeatedly. This is quite common, especially among goldfish and koi fish. However, sometimes, certain fish will keep their mouths open. When I first saw it myself, I got a little worried, as I didn’t know if my fish was sick or disturbed. Fortunately, …

One of the questions I kept asking myself in the early days of fishkeeping was when exactly to use the blue light we are all familiar with. I knew the color was meant to mimic moonlight and allow the fish to gradually transition from day to night. But I had no idea when to turn …

Almost everyone has seen blue lights in an aquarium at least once, whether it’s at a restaurant or at a friend’s house. But not everyone knows what it does. Since I have been asked this question countless times in the past, I decided to devote an entire article to this topic. In this article, I …