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Old 03-23-2014, 11:16 PM   #191
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I think that is a great starting point for a discussion. I have also been reading about TDS and its impact on osmoregulation. There is a theory out there that pH shock is a myth and its really changes in TDS that cause osmotic stress/shock. So I wouldn't mind exploring this as a group too.
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Old 03-24-2014, 03:32 AM   #192
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I think that is a great starting point for a discussion. I have also been reading about TDS and its impact on osmoregulation. There is a theory out there that pH shock is a myth and its really changes in TDS that cause osmotic stress/shock. So I wouldn't mind exploring this as a group too.

Yes this is correct. Been looking in to osmoregulation myself. Took a while to get my head around and had to ask ask an expert on here.

Go to search and look up 'osmotic pressure' it's a good read. Only short
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Old 03-25-2014, 05:17 AM   #193
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Originally Posted by Rak9378 View Post
I think that is a great starting point for a discussion. I have also been reading about TDS and its impact on osmoregulation. There is a theory out there that pH shock is a myth and its really changes in TDS that cause osmotic stress/shock. So I wouldn't mind exploring this as a group too.
I've probably read many of these same articles. I'm quite interested in it because of course i was taught about the good 'ol pH shock. Since learning about TDS I've transferred a lot of guppy fry between my tanks with same TDS with little regard for the rest.
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Old 03-28-2014, 07:52 PM   #194
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Old 03-28-2014, 07:58 PM   #195
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L O L

I just got mine in the mail yesterday, with the same calibration solution

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Old 03-28-2014, 08:24 PM   #196
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I just saw this thread. Very interesting stuff! Being new to this hobby, I was under the impression nitrites in any amount were considered lethal. So, I mistakenly added animals to my tank mid cycle. 2 ADF from my 5 gallon tank who were being bullied by my betta. Then after a week added 7 neons ( NOT a good choice for fish in cycling). So over the past couple of weeks I've had nitrite readings anywhere from .25 or less to off the charts unreadable. I've done as many as 3 50-75% wc a day. Still doing 1 50% a day now for the last few days to keep the nitrites under 0.25. So, I'm almost there. Fishwise, I'm down to 2 neons (3 died from poisoning, and 2 the frogs caught and had for dinner, they were smaller ones). My frogs seem unphased by all this. Its crazy. The remaining neons seem fine, but I expect them to not live at this point, but they look good, eating and all. I just keep changing the water :sigh: Anyway, I'm interested to read more about what species are better at adapting to toxins. It should be a part of newbie fish owner articles!

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Old 04-03-2014, 09:07 PM   #197
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(It's all about the fish)

This thread has taken an interesting turn, there seems to be a lot of supporting data for fish osmoregulation. This is a finely tuned parameter in fish. I guess it's due to the chloride cells in the gills being able to cope with only a certain degree or range of hardness.

Water hardness effects the regulation of blood calcium levels in the blood, this is assisted/aided by diet. The pH shift in the water, or more correctly the ion imbalance in the water creates a pH shift in the blood this will also damage kidneys and can effect eggs developing properly.

Species tolerance varies, both in coping mechanism and degree of change.

PH shock is acidosis or alkalosis, both can and will kill.
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