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Joined: May 2008
Posts: 477
Lunker
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Lunker
Joined: May 2008
Posts: 477 |
this is in reference to the Fry (Fish) Kill thread. Why does sudden rain cause a DO crash? Shouldn't rain be fairly saturated with oxygen since it has so much surface area? I can understand the rain being more dense than the warmer water in the pond and therefore sinking and displacing the warmer oxygenated water but I don't understand how adding oxygenated water can cause a DO crash.
Thanks
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Joined: May 2004
Posts: 13,975 Likes: 277
Moderator Lunker
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Moderator Lunker
Joined: May 2004
Posts: 13,975 Likes: 277 |
IF the cold bottom water is oxygen deficient, cold rain (even though O2 saturated) can cool off the warm surface water and cause it to mix with the dead bottom water, making the average O2 level in the now-homogenized pond too low for fish.
"Live like you'll die tomorrow, but manage your grass like you'll live forever." -S. M. Stirling ![[Linked Image from i.pinimg.com]](https://i.pinimg.com/736x/ed/b5/e7/edb5e7f935843b996cf52be593c9ebd2--smoothie-smooth-collie.jpg)
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Joined: May 2008
Posts: 477
Lunker
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Lunker
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I get it now. Thanks Theo
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Joined: Aug 2003
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Lunker
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Lunker
Joined: Aug 2003
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So if you aerate, would it be safe to say that your diffuser should be turned on prior to or during any rain activity of significance? Would this buffer the danger to some extent?
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Lunker
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