On Fri, 10 Sep 2004 04:34:14 GMT, "Dan White"
wrote:

"Dick" wrote in message
.. .

Knowing I have dense populations, I decided to go from 20% water
changes once a week to twice weekly. So far, so good. Perhaps having
heavy plant growth helps. I notice lots of the fish spend time out of
sight. Also, the fish utilize different levels of the tank.

I have had more problems in my 3 ten gallon tanks than in the more
heavily populated 75 and 29 gallon tanks.

I am no expert, but thought my observation and experiences might help
you.


Yes, that is interesting. I have a question about these water changes. Is
there a way to change 20% without losing the prime to your circulating pump,
assuming you have one? My light/lid (55g) is an old one and it is a bit
cumbersome to remove the light and half of the cover in order to reprime the
tubes. I know it seems like a little thing, but the fewer steps necessary,
the more likely I am to actually change the water.

dwhite

I dread losing the prime. I use a python and lower the water to a
safe level, then reverse the flow to refill the tank, then syphon
again and then the final refill. I estimate the total change at 20%.
I do this change twice weekly. I suppose the chlorine level differs
my one's local. My city water seems fine, the city adds minimum
chlorine.

dick