Corals bags popping during shipping

[SBB Corals]

HI all,

not sure where to post this. I shipped out a box of corals today and some of the bags popped in mid air. i was wondering how to avoid this. the bags im using are water tight

https://www.clearbags.com/4-x-12-polyethylene-double-bottom-seal-flat-bags-500-pieces-tfb3412.html

anybody have any recommendations?

 

[reef lover]

Most shipments i receive are double and sometimes triple bagged.i would try that.

 

[CC13]

HI all,

not sure where to post this. I shipped out a box of corals today and some of the bags popped in mid air. i was wondering how to avoid this. the bags im using are water tight

https://www.clearbags.com/4-x-12-polyethylene-double-bottom-seal-flat-bags-500-pieces-tfb3412.html

anybody have any recommendations?

I have seen some double / triple bag the shipments so if one pops, hopefully the water is still contained.

 

[FarmerTy]

I'd imagine an external physical force was applied to it... Like a larger box fell on your smaller box to pop the bags. If anything, it should depressurize in mid-air... Not get more pressure.

What was your evidence they popped? Do you heat seal them? Tie them? Rubberband them? Double bag? Triple bag?

 

[Potatohead]

I'd imagine an external physical force was applied to it... Like a larger box fell on your smaller box to pop the bags. If anything, it should depressurize in mid-air... Not get more pressure.

What was your evidence they popped? Do you heat seal them? Tie them? Rubberband them? Double bag? Triple bag?

No, stuff puffs up in higher altitude. Ever seen a bag of chips in a plane? The pressure inside the bag becomes greater than outside the bag.

Next time I would slightly deflate the bags before tying them up, and 2-3 bags for sure. Typically you tie one and put it in the second one tied end first.

 

[CC13]

No, stuff puffs up in higher altitude. Ever seen a bag of chips in a plane? The pressure inside the bag becomes greater than outside the bag.

Next time I would slightly deflate the bags before tying them up, and 2-3 bags for sure.

Very valid point.

 

[FarmerTy]

No, stuff puffs up in higher altitude. Ever seen a bag of chips in a plane? The pressure inside the bag becomes greater than outside the bag.

Next time I would slightly deflate the bags before tying them up, and 2-3 bags for sure.

Good catch. I forgot, the air is thinner outside the container versus inside causing the bag to have the higher pressure thereby, inflating. Oh, my physics teacher would be pretty upset at that one. [emoji23]

Now I'm curious, if it was just entirely water... No air... How would the bag be affected? Versus has lots of air. I'm generally asking because obviously my memory of physics is flawed. [emoji16]

 

[SBB Corals]

I have seen some double / triple bag the shipments so if one pops, hopefully the water is still contained.

Yes I always double

 

[SBB Corals]

I'd imagine an external physical force was applied to it... Like a larger box fell on your smaller box to pop the bags. If anything, it should depressurize in mid-air... Not get more pressure.

What was your evidence they popped? Do you heat seal them? Tie them? Rubberband them? Double bag? Triple bag?

They popped as the customer showed me a bag picture and it burst open. I double bag each one and tie the top with a knot. Then put the knot side into the other bag...

I even left some air in the bag .. but I did fill the bag up lik 65% with water. Maybe too much water in 1 bag...

 

[FarmerTy]

They popped as the customer showed me a bag picture and it burst open. I double bag each one and tie the top with a knot. Then put the knot side into the other bag...

I even left some air in the bag .. but I did fill the bag up lik 65% with water. Maybe too much water in 1 bag...

Interesting. I ship a fair amount and haven't come across this but I think you ship even more than me. Hopefully its just a freak accident. Most cargo planes are supposed to be pressurized but I don't really know how much it would take to really pop a bag.

 

[Potatohead]

The clear answer is to place all the bagged corals inside another giant sealed bag so that when the shipment goes on the plane the giant bag is the one expanding and the bags with the corals are still under the same pressure as originally.

Or you could put them in an airtight box with a valve and draw some air out so there's a vaccum in the box. Then if the box leaks on the plane the pressure will just kind of go back to normal.

 

[Potatohead]

Interesting. I ship a fair amount and haven't come across this but I think you ship even more than me. Hopefully its just a freak accident. Most cargo planes are supposed to be pressurized but I don't really know how much it would take to really pop a bag.

Planes are pressurized but typically only to about the equivalent of 10,000 feet. So if you pack at sea level it's quite a difference.

 

[AdamNC]

Or you could put them in an airtight box with a valve and draw some air out so there's a vaccum in the box. Then if the box leaks on the plane the pressure will just kind of go back to normal.

Can’t do that if your using heat packs. They work on the principle of reacting to O2 in order to create heat.

 

[Potatohead]

Can’t do that if your using heat packs. They work on the principle of reacting to O2 in order to create heat.

I think you missed the joke

 

[Arthroverts]

Perhaps you should try this method if your bags continue to pop...
https://www.reef2reef.com/threads/how-i-ship-frags.11490/

Hope this helps,

Arthroverts

 

[Softhammer]

Just minimize the air in the bag. Only air expands and contracts. Water is not compressible so won’t be affected. Lots of experience with this as an airline pilot btw. All cabins on airliners run about 8.0 8.3 psi cabin differential. Not only will it pop bags, it will blow the water out too if upside down.

 

[Manny Tavan]

pee cups

 

[FarmerTy]

Just minimize the air in the bag. Only air expands and contracts. Water is not compressible so won’t be affected. Lots of experience with this as an airline pilot btw. All cabins on airliners run about 8.0 8.3 psi cabin differential. Not only will it pop bags, it will blow the water out too if upside down.

Awesome! Glad to hear! I ship with no air so this is perfect.

 

[FarmerTy]

Perhaps you should try this method if your bags continue to pop...
https://www.reef2reef.com/threads/how-i-ship-frags.11490/

Hope this helps,

Arthroverts

pee cups

He probably ships mostly acros and those specimen cups are known to beat up Acros if they pop loose.

 

[Arthroverts]

O.K. It was just a suggestion, and I was not aware that they would beat Acropora's up. But then again, if you ship it right, you shouldn't have to worry about it popping loose.

Thanks for the clarification,

Arthroverts