Quote:
Originally Posted by purpahurl
I have a 150 gallon tank. When I do a water change I siphon out about 50 gallons at a time and fill it up with the hose. I have never had a problem. Slow and steady wins the race. Water temp is what I worry about.
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That seems risky with un-treated water, but, if you havent had any problems.... What kind of aquarium do you have-Freshwater or saltwater?