How to raise calcium levels?

[jenb7123]

i ordered some of the mini/,small calcium chips from crayfish empire because i just got two mystery snails and one of them has some chips to the bottom of his shell and it loooks thin. i was wondering what should my levels be and how do i add/use the calcium to raise the gh and kh of my 2.5 gallon tank without harming my betta or snails.

 

[APColorado]

You can add cuttlebone

 

[Theulli]

Also (sterilized) eggshells

 

[BigBeardDaHuZi]

A bit of crushed coral works really well. It will add a steady supply of minerals to your water. If your tank is on the acidic side, it will dissolve slowly. I have just a few pieces in my planted tank to keep the snails happy.
What else is in the tank?

 

[Aprilbeingbasic]

Eggshells are easiest just wash them with water then put them in the oven at 150 C for 20 minutes.