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GOD__AM
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I'm interested in understanding this process (Osmoregulation) better. There is some debate about treating freshwater fish by adding medication to the water, and for some instances adding epsom salt.
I have read that osmoregulation in fish only allows water to pass through the skin, and not minerals.
http://www.simplydiscus.com/library/biology/anatomy/osmosis.shtml
Other articles mention how increased magnesium in the water helps the fish draw in more water thus flushing out the system.
http://www.aquarium-pond-answers.com/2006/12/how-do-fish-drink.html#freshwater
http://www.americanaquariumproducts.com/AquariumKH.html#magnesium
I'm a bit confused as hardness of the water is said to regulate the amount of water a fish absorbs through osmosis, as water moves from an area lower mineral content to an area of higher mineral content. Adding magnesium sulfate to the water would raise GH so how does this relate to increasing the fishes intake of water?
So when using medications in the water, are these medications absorbed by the fish through osmosis, and how can epsom salt aid in flushing parasites from the intestines when it is added to the water.
I have read that osmoregulation in fish only allows water to pass through the skin, and not minerals.
http://www.simplydiscus.com/library/biology/anatomy/osmosis.shtml
Osmosis is the process where water moves through a semi-permeable membrane (fish skin or gill membrane) from a lower concentration of minerals (aquarium water) to a higher concentration of minerals (fish's body). The semi-permeable membrane (fish skin or gill membrane) only allows water to pass through it, in and out, not the minerals. This is how freshwater fish stay hydrated. Saltwater fish have to drink lots of water and retain water through their kidneys, excreting minerals, to stay hydrated
Other articles mention how increased magnesium in the water helps the fish draw in more water thus flushing out the system.
http://www.aquarium-pond-answers.com/2006/12/how-do-fish-drink.html#freshwater
In freshwater, a higher electrolyte level (particularly of sodium chloride, calcium and magnesium) will help pull fluids through the body...by pulling fluids through the body this can help with bloat, swim bladder problems, intestinal problems, and even dropsy
http://www.americanaquariumproducts.com/AquariumKH.html#magnesium
Magnesium is important for proper osmotic functions in fish and invertebrates...Epsom salts that contain magnesium sulfate, are best used for therapeutic reasons such as to aid in flushing the system as it aids in and speeds osmotic function, and helps to move fluids out of the body. Sulfates, one of the major components of Epsom Salt, have been shown effective in improving nutrient absorption and toxin elimination.
I'm a bit confused as hardness of the water is said to regulate the amount of water a fish absorbs through osmosis, as water moves from an area lower mineral content to an area of higher mineral content. Adding magnesium sulfate to the water would raise GH so how does this relate to increasing the fishes intake of water?
So when using medications in the water, are these medications absorbed by the fish through osmosis, and how can epsom salt aid in flushing parasites from the intestines when it is added to the water.