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You're putting too much liquid in the bubbles of the airlock. If each side is only filled about one-third, none of the liquid will either be sucked out or blown out.

The fluid in a properly-filled airlock will not get sucked out. As you can see in the picture of the properly-filled airlock below, there is not enough fluid to overflow the bubble chambers in either direction.

enter image description here

Also, as barking pete has answered, you might as well just fill the airlock with water.

EDIT:

In the comments below Wyrmwood says:

The pressure in a fermentation chamber with a good seal after moving from ale temps to a fridge to cold crash is plenty to empty a standard airlock or to suck a half-filled quart jar dry with a blow off tube.

My reply is that sure, it could suck fluid out of a blow-off container through a blow-off tube, but no, it won't suck the fluid out of properly-filled airlock such as the one pictured here. It will suck air through the fluid, but the fluid will be left behind.

You're putting too much liquid in the bubbles of the airlock. If each side is only filled about one-third, none of the liquid will either be sucked out or blown out.

The fluid in a properly-filled airlock will not get sucked out. As you can see in the picture of the properly-filled airlock below, there is not enough fluid to overflow the bubble chambers in either direction.

enter image description here

Also, as barking pete has answered, you might as well just fill the airlock with water.

EDIT:

In the comments below Wyrmwood says:

The pressure in a fermentation chamber with a good seal after moving from ale temps to a fridge to cold crash is plenty to empty a standard airlock or to suck a half-filled quart jar dry with a blow off tube.

My reply is that sure, it could suck fluid out of a blow-off container through a blow-off tube, but no, it won't suck the fluid out of properly-filled airlock such as the one pictured here.

You're putting too much liquid in the bubbles of the airlock. If each side is only filled about one-third, none of the liquid will either be sucked out or blown out.

The fluid in a properly-filled airlock will not get sucked out. As you can see in the picture of the properly-filled airlock below, there is not enough fluid to overflow the bubble chambers in either direction.

enter image description here

Also, as barking pete has answered, you might as well just fill the airlock with water.

EDIT:

In the comments below Wyrmwood says:

The pressure in a fermentation chamber with a good seal after moving from ale temps to a fridge to cold crash is plenty to empty a standard airlock or to suck a half-filled quart jar dry with a blow off tube.

My reply is that sure, it could suck fluid out of a blow-off container through a blow-off tube, but no, it won't suck the fluid out of properly-filled airlock such as the one pictured here. It will suck air through the fluid, but the fluid will be left behind.

5 incorporated comments
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You're putting too much liquid in the bubbles of the airlock. If each side is only filled about one-third, none of the liquid will either be sucked out or blown out.

The fluid in a properly-filled airlock will not get sucked out. As you can see in the picture of the properly-filled airlock below, there is not enough fluid to overflow the bubble chambers in either direction.

enter image description here

Also, as barking pete has answered, you might as well just fill the airlock with water.

EDIT:

In the comments below Wyrmwood says:

The pressure in a fermentation chamber with a good seal after moving from ale temps to a fridge to cold crash is plenty to empty a standard airlock or to suck a half-filled quart jar dry with a blow off tube.

My reply is that sure, it could suck fluid out of a blow-off container through a blow-off tube, but no, it won't suck the fluid out of properly-filled airlock such as the one pictured here.

You're putting too much liquid in the bubbles of the airlock. If each side is only filled about one-third, none of the liquid will either be sucked out or blown out.

The fluid in a properly-filled airlock will not get sucked out. As you can see in the picture of the properly-filled airlock below, there is not enough fluid to overflow the bubble chambers in either direction.

enter image description here

Also, as barking pete has answered, you might as well just fill the airlock with water.

You're putting too much liquid in the bubbles of the airlock. If each side is only filled about one-third, none of the liquid will either be sucked out or blown out.

The fluid in a properly-filled airlock will not get sucked out. As you can see in the picture of the properly-filled airlock below, there is not enough fluid to overflow the bubble chambers in either direction.

enter image description here

Also, as barking pete has answered, you might as well just fill the airlock with water.

EDIT:

In the comments below Wyrmwood says:

The pressure in a fermentation chamber with a good seal after moving from ale temps to a fridge to cold crash is plenty to empty a standard airlock or to suck a half-filled quart jar dry with a blow off tube.

My reply is that sure, it could suck fluid out of a blow-off container through a blow-off tube, but no, it won't suck the fluid out of properly-filled airlock such as the one pictured here.

4 commented on image
source | link

You're putting too much liquid in the bubbles of the airlock. If each side is only filled about one-third, none of the liquid will either be sucked out or blown out.

The fluid in a properly-filled airlock will not get sucked out. As you can see in the picture of the properly-filled airlock below, there is not enough fluid to overflow the bubble chambers in either direction.

enter image description here

Also, as barking pete has answered, you might as well just fill the airlock with water.

You're putting too much liquid in the bubbles of the airlock. If each side is only filled about one-third, none of the liquid will either be sucked out or blown out.

The fluid in a properly-filled airlock will not get sucked out.

enter image description here

Also, as barking pete has answered, you might as well just fill the airlock with water.

You're putting too much liquid in the bubbles of the airlock. If each side is only filled about one-third, none of the liquid will either be sucked out or blown out.

The fluid in a properly-filled airlock will not get sucked out. As you can see in the picture of the properly-filled airlock below, there is not enough fluid to overflow the bubble chambers in either direction.

enter image description here

Also, as barking pete has answered, you might as well just fill the airlock with water.

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