[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[APD] Re: amano shrimp deaths... sign of something worse
Sorry to hear about the losses of your shrimp, and the stress on the fish.
You're right about what killed the shrimp -- it was both the temperature
increase and having the lights off. Warmer water holds less O2. A six
degree change in temperature is -a lot-, and lowers the amount of oxygen you
have available, total. Then, the lights were off, so the plants weren't
adding any O2. I bet, like a lot of plant people, you don't have a lot of
surface agitation, and therefore your fish tanks O2 supply comes almost
entirely from the plants, with surface exchange being minimal. Remember,
also, that although plants produce O2 as a side product of metabolism, they
do respire like you and I -- in other words, they also used up O2, all day,
and all night. If you have to do a dark-period again, add an air-stone or
otherwise aerate the water. You didn't say how big the tank is, or what the
load in it is fish/animal-wise, but my guess is that it may be a little
overcrowded. You may want to consider getting rid of some of the fish.
Joshua L. Wiegert
NFC Lists Administrator JLW at dune_net
AIM UID: JoshuaWiegert ICQ UIN: 276060292
Feel free to contact me by any of the above means for any reason.
"Nature" is made possible by the Corporation for Public Broadcasting
Doubt is not a pleasant state of mind, but certainty is absurd.
-- Voltaire (1767)
Wise men talk because they have something to say; fools, because they
have to say something.
The early bird may get the worm, but the second mouse gets the cheese.
Aquatic-Plants mailing list
Aquatic-Plants at actwin_com