HCA: Hermit Crab Association

I currently have a 60 gal tank with 9 PP in it right now and I am wanting to add my 30 gal tank as as topper tank to give my crabs more room. Instead of busting out the bottom I was kinda hoping I could leave it in tact and just flip it upside down. How could I attach the 2 tanks together to makes sure they are fully secure cause I have 2 small children a large dog and a cat and they all are at the tank all the time so it has to be secure.

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jdauby09 wrote:I currently have a 60 gal tank with 9 PP in it right now and I am wanting to add my 30 gal tank as as topper tank to give my crabs more room. Instead of busting out the bottom I was kinda hoping I could leave it in tact and just flip it upside down. How could I attach the 2 tanks together to makes sure they are fully secure cause I have 2 small children a large dog and a cat and they all are at the tank all the time so it has to be secure.

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Some use duct tape, some drill it or use adhesive glues, others may just lay it on there. You can do whatever you want, but don’t use glue with the crabs being able to smell the fumes.

Do not use any glues. The adhesives are not safe for the crabs.

I am now working on my third topper over the past three or four weeks...and can tell you I am exhausted!

I highly recommend that you remove the bottom of the tank (don’t bust it out). You simply remove the black frame, and then remove the bottom piece. All of this can be done by using a razor blade with a handle. They are sold at auto parts stores for $2.99. By doing this the tank can still be used for a reptile if you ever upgrade. This way you have access through the top- and can use a glass top or a mesh top (whichever you prefer). Mesh needs to be sealed to hold humidity.

For my tanks I simply used black duct tape to hold my tanks together. That is what I have heard others do as well. Some also use Velcro in addition to that.

Good luck!


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I agree with GB! We added a 20g tall in top of our 55g by taking out the bottom glass so we can have access to all top level things easily without having to disassemble it every time. Ours is attached also with duct tape. I found with our tanks the duct tape also helps to seal in some humidity. Good luck!


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