Within the course of putting along your aquarium environment, you may introduce a selection of living organisms: plants, invertebrates, "living" rock and different media for helpful bacteria, and of course fish. However, as in any environment, parasites might find their approach in. One common parasite which will be damaging to your aquarium atmosphere and harmful to your fish is that the leech.

A leech is an annelid, or segmented worm; it is flattened, with a sucker on both the tail and the mouth. Leeches propel themselves forward by using each suckers, manufacturing a motion kind of like that of an inchworm. Most live in water; there are freshwater, saltwater, and terrestrial varieties. Many leeches, given the chance, can attach themselves to humans and alternative creatures, sucking the host creature's blood. It was common medical follow within the Middle Ages to "bleed" a patient by attaching a leech to the patient's body and allowing the leech to drink his fill. Medieval medicine wrongly held that the body was composed of 4 principal fluids, or "humors," and that an imbalance among these humors was the most reason behind disease. Blood was one in all the humors and was usually thought to be in excess; therefore, bleeding a patient helped bring the level of blood back to balance with the opposite humors.

Leeches are usually straightforward to identify in your aquarium: it's unlikely you may see any of the larger varieties, however freshwater leeches that might find their manner into your aquarium can still be up to a pair of inches long. Leeches swim in an undulating motion. If they're connected to a fish, they'll be heart-formed, as they curl up onto your fish's body, fins, or gills. The odd leech bite isn't going to hurt your fish in any major method, but an infestation will cause major problems, inflicting fish to become listless and thin. Leech bites will render fish vulnerable to different diseases; open wounds will become infected. And a leech can transfer microbial diseases from one fish to another.

Leeches might 1st enter your tank via live food that comes from leech-infested waters. If you depend upon live food that you just grow yourself, you'll be able to greatly scale back the prospect of a leech infestation. Leeches can additionally come back via new fish that you just introduce, or new plant life. Be positive to examine new creatures or plants thoroughly; if you're concerned, you'll be able to keep new fish quarantined for a period of time before permitting them to mix with your existing specimens. And you'll be able to place new flowers during a potassium permanganate resolution, five mg/l, for regarding an hour before introducing them to your tank. The potassium permanganate will kill any leeches that may be hiding in the foliage.

If you find a leech connected to your fish, do not be tempted to remove it with a try of tweezers (or pliers!); leeches burrow themselves into your fish's body to draw blood, and forcible removal can seriously harm your fish. Instead, bathe your fish for about fifteen minutes in an exceedingly 2.5 percent saline solution. This should cause the leech to giving up, or to loosen its grip such that you'll be able to ease it out while not leaving any leech components inside your fish. If your fish are sensitive to salt -- for example, sure species of catfish -- then saline resolution will not work; you will want to medicate your entire tank by adding one milligram of trichlorofon for every gallon of water in your tank. The trichlorofon might be harmful to some plants, thus it might be best to get rid of the plants initial and treat them with potassium permanganate, as described above.

Though leeches are not everybody's idea of a perfect aquarium pet, they're attention-grabbing creatures in their own right, and some folks do keep them, sequestered in their own small aquarium of course. They're simple to stay and do not demand abundant food: a little piece of meat or an earthworm every week is typically enough to keep a leech happy. They are quick to seek out food sources, but, and can reply to your finger rubbing along the surface of the tank yet on shadows passing overhead. If you retain substrate in your leech tank, the leeches tend to burrow; they're conjointly glorious scavengers. Most leeches are freshwater, but as a result of there also are marine varieties, be sure you know what kind of water your leech will need.

If you are fitting an aquarium in your home or workplace, there are a variety of things you need to consider. 1st, what sort of ecosystem do you would like to make: freshwater, saltwater, a reef surroundings, a river surroundings? The scale of your tank, and the equipment you will would like to outfit your tank, all rely on what you wish to stock the tank with. (If you're a beginner, a smaller tank is usually a lot of suitable.) However irrespective of what your eventual aquarium setting can look like, you may would like to light it.

Since your aquarium will possibly be indoors, you would like lighting to be able to view your fish and flora; overhead or ambient lighting that is already gift in the space where you will be keeping your aquarium is never sufficient. However, most important, your flowers and a lot of marine life (like coral and anemones) need light-weight for photosynthesis. Lighting also influences fish behavior and affects the well-being of your aquarium environment.

Aquarium lighting fixtures are generally mounted to a hood or cover that fits over your tank. Obviously, you must have a hood that is appropriate for the dimensions of your tank, and you should discuss your choices with your dealer when you initially purchase your tank. Most aquarium lighting is fluorescent (traditional output or compact) or high-intensity metal halide, and you will want to determine what you will would like before getting a tank and hood, to ensure that they will accommodate the style of lighting, and size and configuration of sunshine bulb, that you'll require.

As a general formula, you may want two watts of lighting for every gallon of water in your tank; a 60-gallon tank would then need one hundred twenty watts of lighting power. But, if you have got dense vegetation with higher necessities, then you may need at least double that -- figure on five watts per gallon -- and reef tanks need even more. Keep in mind that lighting may be a complicated subject, and also the watts-per-gallon guideline is solely the start of the discussion; several other variables will come back into play, particularly as lighting systems become a lot of advanced. The output from a sixty-watt metal halide bulb can differ considerably from the output from a 60-watt floodlight, for instance. Other variables you will wish to think about include lumens per watt, PAR (photosynthetic active radiation), PUR (photosynthetic useable radiation), and even the house the bulbs will occupy in the hood; do some research on the Web and discuss the problem together with your dealer or with an experienced hobbyist.

You want your lights to bring out the colourful coloration of fish, coral, plants, and alternative life forms you may have in your aquarium. Light-weight can have a vary of visual quality with respect to how colours are rendered to our eyes, and this is often measured by the CRI (color rendering index) of a specific kind of light bulb. The CRI of a bulb relies on a scale of 1 to 100, with one hundred indicating how a lit object will seem in natural daylight conditions. Full-spectrum bulbs -- bulbs that emit all the wavelengths of visible light -- approximate natural light-weight most closely, and therefore have high CRI values. But, you'll wish to boost sure colors by using color-enhancing bulbs, that emit light from the "warmer" finish of the color spectrum and accent reds and yellows. Several enthusiasts combine full-spectrum bulbs with color-enhancing bulbs.

Another commonly used measurement could be a bulb's color temperature, measured by its Kelvin rating (K-rating); the K-rating describes the temperature (in degrees Kelvin) and corresponding vary of colours of a light-weight source. The progression of colors from the lower end of the Kelvin scale begins with reds and oranges, to yellows, greens, blues, and indigos, on to violet at the upper end. Oddly, the colours highlighted by bulbs with lower K-ratings (reds and yellows) are thought-about "hotter," whereas the blues and violets highlighted by bulbs with higher K-ratings are considered "cooler."

Sunlight at midday contains a K-rating of five,five hundred degrees Kelvin and contains a mix of all the colours within the spectrum; therefore, a five,500 Kelvin bulb is a full-spectrum bulb. Bulbs with a lower K-rating offer off reddish lightweight, and bulbs with higher K-ratings emit bluish light. Freshwater aquariums usually do better with full-spectrum bulbs, perhaps complemented by some warmer color-enhancing bulbs. Saltwater aquariums, notably reef aquariums, usually need higher K-ratings, a minimum of 10,000 degrees Kelvin. Corals and invertebrates have naturally custom-made to bluer light-weight and will thrive in a cool-lightweight environment.

As for the useful purpose of aquarium lighting, your lighting will be the first, and usually the only, supply of light for your plants, corals, and different photosynthetic organisms. To confirm that this life-sustaining method proceeds smoothly, you must mainly be involved with the intensity of your bulbs; total wattage is the first measure of light intensity. Freshwater planted aquariums require 2-five watts per gallon, however saltwater reef aquariums can need more, as abundant as 8 watts per gallon.

Many reef aquariums are lit with bulbs producing "actinic" lightweight; these bulbs are high intensity and will promote photosynthesis in your coral as well as your reef plant life. However, because actinic bulbs produce light-weight that is strongly blue, they need to be balanced with warmer lightweight, or with full-spectrum bulbs. A "50/fifty lamp" combines full-spectrum light-weight (sometimes half dozen,000 degrees Kelvin) with actinic light in an exceedingly single bulb, and would thus be a resolution if you simply have one fixture in your hood.

Once you have got set on your lighting, be sure to put in the lights on a timer. Most aquatic environments do best with ten-12 hours of sunshine each day, approximating natural conditions; fish need "down time" the same as humans! If you're prone to forgetting to turn your aquarium lights on and off daily, a timer can do the duty for you.