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View Full Version : Jack Watley's controlled Water Change test



FishLover
Sat Jul 29, 2006, 03:36 PM
In order to get the exact numbers, I checked the back issue of TFH mag and here is the controlled test:
4 weeks of controlled test using the same number of frys in two tanks, one tank is 12 times bigger than the other. Same pH, food and everything. The bigger tank has a sponge filter, the small tank only has an air stone.

Here comes the difference in W/C:
the lager tank get 40% daily
smaller tank get 6 to 8 90% daile(at least one at 3:00am!)

After 4 weeks, the fry in the smaller tank are nearly twice as big as the bigger tank.

This was published in early issue of TFH mag and Jack said it again in June 2006 issue when answering the reader in the Ask Jack section.

Water change does matter if you want to grow them big and happy.

Hope this help. I'm not saying that people should start W/C 3:00am from now on. He was just trying to prove a point.

Warruff
Sat Jul 29, 2006, 04:54 PM
Hello FishLover,

Just a question of interest do you think they going to get a lot bigger or are they just going to get to a similar size just quicker?

Ben

FishLover
Sat Jul 29, 2006, 05:52 PM
JMO they get bigger.