No, the alum grows faster.
sugar, salt, and alum powder
To make pure crystals of alum from impure alum, start by dissolving the impure alum in warm water. Filter the solution to remove any impurities, and then cool the filtered solution slowly. As the solution cools, pure alum crystals will start to form. Carefully collect the crystals and allow them to dry to obtain pure crystals of alum.
You will be aggravated by the difficulty in getting good crystals to grow if you use table salt. If you can get hold of some alum or copper (II) sulfate, both of those salts grow crystals well.
either Aluminum or Boron are used in the synthesis of alum crystals
Sodium chloride is not alum salt.
An alum is a form of salt with pale crystals, used in dyeing, tanning, and medicines, or a similar double sulphate in which either or both of the potassium or aluminium is represented by other univalent or tervalent cations.
Paper sheet having small undissolved alum crystals
by adding acids in alum crystals
Alum crystals turn into a solid mass of anhydrous alum
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you could find it at shaws on the canned food section or at any other supermarket but they seem to always have at shaws