Use of a pump in fermenter.

[Chips Molasses]

Hi, I recently began using a 500w aquarium heater in my 200L fermenter. I threw a pump in there to circulate water to assist the heater, led me to thinking..... If yeast likes oxygen, how would it be if I let the pump keep running during fermentation allowing it to cascade into the wash, Would it help? What do you think?

[Sam.]

Oxygen is good for the first part of the ferment when the yeast is multiplying but once the oxygen is gone that's when they get to business so probably not the best idea to aerate the whole way.

Usually aerating the shit out of it at the start will be more than adequate :handgestures-thumbupleft:

Someone will probably be able to give you a more precise explanation but the above is the basics of it.

[Chips Molasses]

Ok I will do the Bamix blender think when adding the yeast, and see how that goes. I think these aquarium heaters are designed to work with circulating water. Maybe I could just put the hose underwater during the ferment?

[bluess57]

To produce alcohol, yeast use anaerobic respiration...ie no oxygen
An acquarium heater in your fermenter is fine, convection currents will move the wash around.
KISS

[Chips Molasses]

A little bit of knowledge helps allot, thanks guys.