from the blog

Cloudy Aquarium Water

Care and maintenance

Water quality

September 26, 2020

One of the most common challenges of keeping an aquarium is cloudy water. Whether the cloudiness is green, white, or gray, a fish habitat that is short of crystal clear is not just an eyesore but also a serious health risk for its inhabitants. Why does the water turn cloudy and what can you do about it?

Grayish or dirty white water is often encountered when setting up a new tank. In most cases, a sand or gravel substrate that has not been diligently rinsed before setup will generate sufficient debris to fog the water. The only solution would be to re-rinse the substrate until all the debris is removed. An efficient mechanical filter will also help take care of minute floating particles.

Green water, which is oftentimes also thick and hazy, is caused by an “algae bloom” or the rapid growth of microscopic green algae. High and prolonged levels of bright light are the main causes of green algae growth and proliferation. If a tank gets direct sunlight or if the overhead lighting is left on for more than 10-12 hours a day, algae overgrowth becomes imminent. The simple solution is to locate the tank away from direct sunlight and attach a timer to the overhead lights so that the ideal light exposure cycles can be maintained.

Milky white water that sometimes gives off a rotten smell is caused by decay. Uneaten leftover food deteriorates and fouls up the water. An overstocked aquarium will render filtration systems and nitrifying bacteria inadequate to handle the bio-load. The result is pollution from rotting food and excess waste, making the water murky. In severe pollution situations, drastic water changes may be necessary.

Cloudy aquarium water caused by decaying food can be prevented by feeding only as much as the fish community can consume in three to five minutes. Leftover food should be scooped out.

Murky water caused by excess waste products can be prevented by maintaining a balanced tank with a population of fishes suitable for the size of the tank and the capacity of the filtration systems. This ensures that the filters and the colonies of beneficial bacteria can keep up with the bio-load of the community.

In effect, cloudy water can be minimized if adequate colonies of beneficial bacteria are present to break down the harmful ammonia and nitrites (from decaying food and excess waste matter) into less harmful nitrates. Experts have suggested adding gravel from established aquariums to supplement the insufficient bacterial colonies in a cloudy tank. One simple solution is to add an EcoBio-Stone product to the tank.

The EcoBio-Block Family Products are mineral-rich porous volcanic stones from Japan embedded with prolific bacteria (“bacillus subtilis natto”) that can actively multiply every half hour. The bacteria establish colonies quickly, degrading organic matter and nitrifying waste products, and keeping the aquarium clear, odor-free and healthy for years.

Cloudy aquarium water, which causes stress to the fish community, should never have to happen. Feed just the right amount of food, keep a population of fish suitable to the tank size and filtration system, and add a bacteria enhancing product like EcoBio-Block, and you are assured of crystal clear water and healthy fishes all the time.

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