Do you know the flow rate of the filter? I believe the Aqua-Techs are made by Marineland, which means it should be a good filter, but the real determining factor is the flow rate.
Again, it depends. If your change routine is working well, then don't worry about it. As long as the tank is healthy, you're doing fine.
>Also, I'm doing
I use a Python on all but my 7 gallon tank. It's great- I can do a 40-50% water change on my 90 gallon tank in about 15 minutes. As long as the water you are adding is reasonably close in temp to what is in the tank (I use a 'feel' method- just adjust the balance of hot/cold at the tap till it feels close to the tank temp with my hand), you shouldn't have a problem. Yes, you can add the Stress Coat after you put the new water in or even as you are adding to the tank. Just squirt in what you need for the amount of new water you are adding as the tank fills.
-Mak
http://www.thirtytwopaws.com/mak Updates 8/31/03
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