salinity and planted aquarium... - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 02-10-2009, 06:49 PM Thread Starter
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salinity and planted aquarium...

what should be the salinity of a planted aquarium??
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post #2 of 6 (permalink) Old 02-10-2009, 07:24 PM
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close to 0 unless treating for ich. My plants has suffered since my treatment with high temp and salt in the water.
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post #3 of 6 (permalink) Old 02-10-2009, 08:23 PM
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Let's see if I can remember this correctly...

hypertonic extracellular environments will cause damage to plant cells; since the concentration outside of the cell is greater than that inside the cell, the plant cell will use it's contractile vacuole in an attempt to equilibrate the two environments (osmosis - movement from [high] to [low]). This loss of water via osmosis results in a condition known as plasmolysis; the plasma membrane will pull away from the cell wall and the contractile vacuole will collapse, leading to cytorrhysis, essentially the collapse of the cell wall.

Let's review:
Osmosis --> Plasmolysis --> cytorrhysis
water leaves cell --> plasma membrane separates from cell wall --> cell dies
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post #4 of 6 (permalink) Old 02-10-2009, 09:03 PM
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Guess you have to clarify what you mean by salinity, if you mean water hardness, it is generally preferred that the water is softer. However, not all plants and fish prefer soft water, african cichlids and valisneria come to mind as obvious exceptions.

You might also mean electrical conductivity of the water (that's what I think of). Again, different plants will respond differently as will fish.

What kinds of plants and fish do you want to maintain?
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post #5 of 6 (permalink) Old 02-10-2009, 09:34 PM Thread Starter
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I ment salinity -NaCl ..
someday i should check TDS also...

i am maintaining a tank with soft water species(plants and animals), however my external filter that i use now, was used in my tanganyka set up before... so iwas wondering maybe my water's parameters have been infuenced by that...
it will take a while for my filter to become "soft" i guess...
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post #6 of 6 (permalink) Old 02-10-2009, 09:35 PM Thread Starter
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Quote:
Originally Posted by ColeMan View Post
Let's see if I can remember this correctly...

hypertonic extracellular environments will cause damage to plant cells; since the concentration outside of the cell is greater than that inside the cell, the plant cell will use it's contractile vacuole in an attempt to equilibrate the two environments (osmosis - movement from [high] to [low]). This loss of water via osmosis results in a condition known as plasmolysis; the plasma membrane will pull away from the cell wall and the contractile vacuole will collapse, leading to cytorrhysis, essentially the collapse of the cell wall.

Let's review:
Osmosis --> Plasmolysis --> cytorrhysis
water leaves cell --> plasma membrane separates from cell wall --> cell dies
i checked my books you are 100 % correct!
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