04/24/2023
Bacterial bloom
Bacterial bloom is yet another issue deemed extremely common when the water in your tank turns exceptionally cloudy. When your aquarium is riddled with bacterial bloom or blossom, it often resembles a tank full of diluted milk.
This phenomenon occurs when your tank has excess nutrients, fish waste, or decaying food in the water and a limited quantity of beneficial bacteria to eat it. This situation tips off the system and forces the bacterial colony to reproduce more. The explosion of the population often makes the water have a milky haze.
If your water looks like a thick white fog, then you might be dealing with a bacterial bloom. Yep, that hazy cloud could actually be millions of tiny beneficial bacteria, swirling around your tank.
On its own, a single bacteria is invisible. However, as they grow in number, the group looks like a foggy discoloration in your aquarium.
Gross, huh?
What you are looking at is commonly called a bacterial colony.
Bacterial blossom is a common sight when cycling your aquarium. In some cases, it will be a mild haze, while in others, your aquarium can look like it’s filled with milk – it all depends on how many bacteria there are.
The leading cause can be introducing harmful chemicals or medications that are prone to kill or deplete the beneficial bacterial colony in your tank.
Sudden ammonia spikes from any organic waste produced by your fish can also result in bacterial bloom.
A new tank that hasn’t been appropriately cycled can also result in milky water.
A new big group of fish can cause this issue if your tank doesn’t have enough beneficial bacteria to support the tank’s ecosystem.
Replacing the old filter system with a new filter can also cause this issue.
How to get rid of it!
You do nothing. In a cycling tank, this bacterial bloom will disappear on its own. A week later, your cloudy water will be nothing more than a distant memory.
If you are not cycling your tank, then a bacteria bloom could be a big warning sign. You see, this bacteria commonly appears when decaying plants, rotting fish food or too much p**p builds up in your tank.
If that’s the case, the first thing you want to do is grab your trusty aquarium test kit.
Got it? Good. Now, you need to check your ammonia and nitrite level to make sure they are both at zero parts per million (ppm).
If they have risen, perform an immediate water change so that no harm comes to your fish. Now, you have to figure out what the cause was.
This cloudy looking bacteria often appears when there is too much fish waste breaking down. The most common cause of this is overfeeding your fish. Not only will your fish p**p more, but there will be uneaten fish food source rotting at the bottom of the tank syndrome – fix this by cutting back feedings and removing all the uneaten excess food and decaying excess waste from your tank.
Another cause could be that you accidentally killed off all the good bacteria in your cloudy fish tank. If you rinsed your aquarium filter media in tap water, the chlorine will kill the good bacteria, and you will have to cycle your aquarium all over again, with your fish still inside.
If you have changed your tank’s water recently, that can be a big reason for bacterial bloom. To get rid of this, wait for a week or two.
The cloudiness of your water tank should start to gradually clear up as soon as the tank’s bacteria reestablish again, thus forming a perfect aquatic system. Avoid changing your water constantly or using UV sterilization as it can further increase your issue of bacterial bloom.
However, if you feel that the bacteria bloom is caused by other factors like substrates, excess waste, or decaying food, perform a partial water change. One can also use a gravel vacuum to eliminate the tiny particles floating in your tank. Partial water change is the key here as it won’t damage the existing bacterial culture.