Arkayology
Active member
I love your tank. More pictures!
This is something I try to strictly avoid. Aeration in the shipping bag drives CO2 out, raises pH, converts ammonium to ammonia, stresses the fish...the low pH in the bag is beneficial to detoxify the ammonia. But, just my 2 cents and don't mean to armchair QB. Glad everything worked out!![]()
Well come on Mike, how was it? What did you buy?
I think what Matt is saying is that fish and corals respire CO2. The accumulated CO2 drives down pH. FWIW, our exporters typically record an initial pH in the 8.0 - 8.1 range. Somewhere between 24-30 hours later, the pH we record is typically in the 6.6 - 6.8 range. This drop in pH is a normal function of the shipping process ...Matt, are you saying the PH of the bagged salt water is under 6.8? ...
Greetings All !
I think what Matt is saying is that fish and corals respire CO2. The accumulated CO2 drives down pH. FWIW, our exporters typically record an initial pH in the 8.0 - 8.1 range. Somewhere between 24-30 hours later, the pH we record is typically in the 6.6 - 6.8 range. This drop in pH is a normal function of the shipping process ...
... No Worries.
HTH
:thumbsup:
martinphillip03 said:Matt, are you saying the PH of the bagged salt water is under 6.8? I know this is true in fresh water, but never really thought about it in salt water.
Marty
No specific clean up crew...unless you count the bristle wormsMike what do you use for CUC?
Hi Gary!
Thanks for chiming in, and yup, that was my point. At one point I had measured pH and ammonia levels in shipping bags as a regular part of the acclimation process but it's been so long I can't remember what the actual numbers I measured were. All I can remember is that it confirmed that aerating shipping water is probably not helping matters.
Hi Marty,
Why do you mention 6.8 specifically out of curiosity? As far as I understand it (disclaimer that I am not a chemist!) the ammonia>ammonium shift is always happening as pH drops and is the same in fresh or salt water. Here is a website with a little more info:
http://fins.actwin.com/aquatic-plants/month.9603/msg00130.html
The gist of it as far as I understand it is that a rise in pH in a shipping bag from say 7.2 to 8.2 would make the ammonia concentration about 10 times higher. At a pH of 7.23 only about 1% of it is present as ammonia, but at 8.23 10% of it is present as ammonia.
My 2 cents is that a fast acclimation (I use an airline with no knot tied in it) adds well aerated water while at the same time diluting ammonia. I float the bag for a slow temp acclimation and then manipulate the salinity of the tank to match that in the bag before starting the drip. Some people even just net the fish and dump it in after matching tank temp and salinity to the bag but with no acclimation. This may work fine too.
Sorry to hijack your thread Mike!