Sea Shells

[Mark3]

Kids pick up a sack of shells when we go to the beach...is there a good use for these shells? I was thinking of putting them in the sump. I boiled them for 20 minutes so they are clean.
Would there be any advantage/disadvantage to sea shells in the sump?

 

[Kawasaki213]

Raise calcium I would not put in!

 

[Randy Holmes-Farley Verified Community Expert]

Kids pick up a sack of shells when we go to the beach...is there a good use for these shells? I was thinking of putting them in the sump. I boiled them for 20 minutes so they are clean.
Would there be any advantage/disadvantage to sea shells in the sump?

Aside from providing a small amount of surface area for growing bacteria, I do not think they will be of value.

 

[Duke4Life]

Have any hermits? Could always be used for them 2 swap shells out.

 

[DeniseAndy]

My kids use them to decorate boxes and such. :)

 

[Mark3]

yes...but they collect a bag full of shells each trip to the beach....I was just wondering if they would be beneficial in the sump? maybe if I crush them into sand?

 

[d2mini]

I've added shells to the tank before for hermits.
Other than that, or looking pretty for a while (they will get covered in coralline) there is no real benefit.

 

[Paul B]

They are of no benefit but you can put all of them in there if you like. They make some gravel out of crushed shells. Many beaches on mangrove Islands are just shells. This mangrove Island is all broken shells, no sand.