Green aquarium water gets its color from free-floating algae which have cells that contain chloroplast like plants and can produce energy from sunlight; Animal Mum. As such, the most straight forward way to deal with this clarity issue is to starve the algae by cleaning your fish tank more and limiting the light duration to between 8 and 10 hours.
Algea, being a type of plant, will thrive as any other species would in your aquarium. So, please note that algae are a part of any water body, including freshwater and marine aquariums, and though unsightly, is not harmful to fish. Aquarium treatments such as green away can simply resolve green water issues in a fish tank, but they are more a short term solution.
To exhaustively get rid of the green scum, you would need to do something about the underlying issues. As I noted above, the principal cause of algae-bloom is excess lighting or too much waste in your fish tank. As such, this would be an ideal place to start. A balance aquarium lighting schedule is not only crucial at keeping your fish tank from turning green but also give your aquatic pets enough time to rest after a whole day of swimming and feeding.
In planted aquariums, adequate but not too much lighting is also paramount to ensure your plants grow at a reasonable rate, not too fast, and not too slow. Generally, anywhere from 8 to 10 hours of lighting is considered adequate , though in aquariums with plants species that require high-light and consume plenty of nutrients, up to 12 hours of light is allowable.
Usually, when there is excess waste in your fish tank resulting from leftover food, fish poop, and plant debris, a chemical imbalance ensues, causing excess algae growth. The algae growth is boosted by a surplus of nutrients such as nitrates and phosphates, which they use as food, coupled with light during the photosynthesis process. Phosphates can come from several sources in an aquarium, but most times, it results from fish waste and leftover from commercial fish foods.
Even so, the tap water from some municipal supplies is naturally high in phosphates enough to cause spikes in your water. That said, please note that both conditions, that is, excess light and chemical imbalance, need to be present for algae to develop, and neither alone is self-sufficient.
Since sometimes it is a little challenging to keep waste from accumulating in your fish tank, a reliable cleaning schedule is recommended to ensure you remove all excess dirt that might be in your water. Usually, most wastes sink to the bottom once they get soaked, so start by vacuuming your substrate.
Gravel is pretty easy to wash, though a basic siphon vac kit will work even for sand substrates. Another part of your aquarium you will want to focus on cleaning is the glass.
Algae seem to like clinging to tank walls and can get very unsightly, plus make your water murky. Driftwoods, rocks, and other decorations can also be harbors of algae, so clean then every once in a while.
In extreme cases, algae may block light, preventing plants from getting the light they need to thrive. It is unlikely that green water can pose any direct problems for aquarium fish. Green water needs two things to thrive: excessive light and phosphate. If a fish tank receives direct sunlight, or the lights are left on for too long, it can encourage the growth of free-living algae.
A fish tank in direct sunlight will often develop blooms of green water. Phosphates can come from a number of sources. Fish waste and fish food can be very high in phosphates. In some areas, the tap water is naturally high in phosphates. You can control green water in several ways. First, limit the amount of light on the fish tank. Never place a fish tank in direct sunlight, since this causes blooms of green water. There are more than 70, species present on earth, in both fresh water and sea water, and on land!
Like plants, it creates energy and growth through the photosynthesis of light. The forms of algae that occur in most aquariums are freshwater green algae. It is natural for aquariums to have some algae, and in fact, algae can provide food for snails and other aquatic creatures in your collection. The problem comes when the bloom gets out of control and turns the water in your aquarium murky and opaque.
The green color occurs because the number of microscopic algae becomes so high that it reduces the transparency of the water. In severe cases, the water may be so green that the fish are not even visible. Green water is usually due to either a significant excess of light particularly direct sunlight or a major water quality problem.
Water changes more frequently will reduce green water temporarily, but will not eliminate it or keep it from coming back, unless the underlying causes are addressed. The water aggregators sold in pet stores that profess to clump suspended algae and remove it are not effective against green water. Also, the use of algaecides that kill the algae may cause a depletion in oxygen in the water due to decomposition of dead algae cells.
As with any aquarium problem , keeping the aquarium clean and performing regular water changes is one of the best preventative measures. Prompt attention to sudden algae growth will prevent more serious problems in your tank.
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