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If your fish are consistently surfacing, it means that they are gulping for air.
You should do an immediate 50% water change, and make sure that you add the recommended dosage of water conditioner to the tank when adding the new water back in.
Also, make sure that you test for ammonia, nitrites and nitrates which should be 0, 0, and less than 10 respectively.
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Why the position of the fish inside the water seems to be at less depth than of its actual position?
Light coming from the fish under water deviate from its original path due to refraction phenomenon and its image is displaced from its actual position. The image of fish is appeared at shallower depth than its actual depth
What is apparent depth?
If a person looks at a straight object, such as a pencil or straw, which is placed at a slant, partially in the water, the object appears to bend at the water's surface. This is due to the bending of light rays as they move from the water to the air. Once the rays reach the eye, the eye traces them back as straight lines (lines of sight). The lines of sight (shown as dashed lines) intersect at a higher position than where the actual rays originated. This causes the pencil to appear higher and the water to appear shallower than it really is. The depth that the water appears to be when viewed from above is known as the apparent depth.
What does the coin that lies submerged at the bottom part of water looks?
As the coin submerged in water and kept at the bottom of the vessel and if it is looked right from the top then it will appear to be lifted up by a small distance such that the actual depth / apparent depth = refractive index of water. If suppose the actual height of level of water is 12 cm then the coim will be shifted up by 3 cm. So the apparent depth will be 9 cm. Hence refractive index of water = 12/9 = 4/3 = 1.333.
Why the position of fish inside the water seem to be at less depth than that of its actual position?
Light coming from the fish under water deviate from its original path due to refraction phenomenon and its image is displaced from its actual position. The image of fish is appeared at shallower depth than its actual depth
Which information is most important when passing near a lighthouse?
Depth of water
How much water is needed to fill an oval above ground pool that is 30' by 15'?
The calculation for an oval pool is: Length x Width x Water Depth x 5.9 = Total Gallons Please note that the water depth is the ACTUAL water depth, not the wall height (the water is typically 6" lower than the wall). For your example, let's assume an actual water depth of 3.5 ft: 30 x 15 x 3.5 x 5.9 = 9,293 gallons or about 9,300 gallons. Hope this helps ... http://www.poolspa.com/calculator/
How do you determine the number of gallons of water in a round pool 25ft x 4ft?
The calculation for a ROUND pool is: Diameter x Diameter x Depth X 5.9 = Number of Gallons For example: For example, the volume of a 15-foot round pool with an actual water depth of 3 ft is: 15x15x3x5.9 = 3,982 gallons. Please note that the DEPTH is the ACTUAL water depth NOT the height of the pool wall (the water is usually around 6 inchs lower than the wall height). Hope this helps ... http://www.poolspa.com/calculator/
What makes some water appear to be blue?
Water appears varying shades of blue depending on its depth. Deeper pools of water will appear a darker shade of blue, due to scattering of white light and selective absorption. Lesser, shallower amounts of water will appear clear due to the way the light scatters as well.
What is difference between the initial and final depth of water?
To find the difference between the initial and final depth of water is to subtract the final depth by the initial depth. The initial depth of what is what the water depth starts at and the final depth is the depth of the water once it is finished filling up.
A boater would use a tide table for what type of information?
Water depth
How many gallons of water are in a 24 foot round pool that is 4 feet deep?
For a round above ground pool, the calculation is: Diameter x Diameter x Depth X 5.9 = Number of Gallons Please note that the depth is the ACTUAL water depth NOT the height of the pool wall (the water is usually around 6 inchs lower than the wall height). For your example: For a 24-foot round pool with a actual water depth of 3.5 ft: 24x24x3.5x5.9 = 11,894 or around 12,000 gallons.
Is a water table fixed in position?
No. The water table (groundwater surface) is a location of varying depth depending on the topography and the location of aquifers and their associated permeable layers. There can be multiple water tables.
