For such a large tank perhaps you could consider trying something along the
lines of how I do a water change.

I use an Eheim 1250 hobby pump placed directly into the tank with a hose
attached to its outlet and which runs directly into the bath for draining.
For refilling I do it the opposite way with the pump placed into my 10
gallon holding bucket and the hose end into the tank. Just make sure the
pump doesn't run dry (and the hose stays in the tank). Its so easy and means
I can sit down, have a cup of tea and no longer have to lift any heavy
buckets of water during a water change. With a little care and practice, it
also means that no accidents will occur moving these large quantities of
water about.Whole process takes 15 mins or so and in my 56 UK gallon
(approx. 66 gallon US) tank I can change about 20% every day easily should
I desire. At £45 it a great buy and I wouldn't be without it. Also I'm
almost certain US prices will be far cheaper.


You need to be a little practice to start with
"Victor M. Martinez" wrote in message
...
LeighMo wrote:
I've heard that, but I don't understand how she avoids pH crashes that
way.
Don't biological processes use up all the KH in the tank in six months?
Even
if you don't have a lot of fish, you still have bacteria, decaying
leaves, etc.

Yes, but the plants use all of the nitrogen, so there's no oxides to form
acids with. Or something like that...

As for my tanks...I change at least 30% weekly. The fish seem to
appreciate
it, even though my tanks are planted.

I can't picture changing that much water in my 110g tank. That's a lot of
water!

--
Victor M. Martinez | The University of Texas at Austin
| Department of Chemical Engineering
http://www.che.utexas.edu/~martiv | Austin, TX 78712
If we knew what we were doing it would not be called research, would it?