"carlrs" wrote in message
oups.com...

(Brevity snips)

As Tynk stated, your tank is most likely going through old tank
syndrome.

This could very well be. I can't really know, but before I added any new
fish the tank (and filter) were thoroughly cleaned, the gravel vacuumed
until the water was darn near clear as the tank water. The glass was
cleaned - and then it was refilled, dechlorinator added at time of filling.
Then to make extra sure the water was as clean as possibly without breaking
down the tank I ran the Diatom filter for a few hours, stirring the gravel
over and over while it was running. There is no UGF in any of my tanks. I
will definately check out the sites below. Thanks. ;-)

All my filters are Aquaclears.


For more about this subject, please see this article:
http://www.americanaquariumproducts....gen_Cycle.html

You may have also a disease or virus present in your aquarium, so
please watch for symptoms. One possible disease that shows little
symptom is Ichthyophonus which is a fungus (not to be confused with
ich). For mo
http://aquarium-answers.blogspot.com...s-in-fish.html


You might consider SeaChem's Purigen as well. Although I do disagree
with the statement about added hardness (or GH), studies have shown
that hardness (not KH) controls pH spikes during hours of peak
photosynthesis even when KH is adequate. Calcium is also important for
proper osmoregulation as well.
See these articles:
http://www.americanaquariumproducts....iumPlants.html
There is a graph here;
http://www.americanaquariumproducts.com/ClearPond.html

Carl

--

RM....
My Pond & Aquarium Pages:
http://tinyurl.com/9do58
Zone 6. Middle TN USA
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