The seller determines the sale price of the product you have examined. aquarium sand calcite (1.0 - 2.0 mm) 5 kg before using the sand, wash it with clean water at least 5-6 times with plenty of water before using any chemicals and then use it. ?important note about washing: users are talking about the problem of washing in the sand they bought !! since the product you have purchased is a natural product, it is natural for it to be dirty. during the washing process, 5 kg of sand should be divided into 5/6 parts and washed with plenty of clear water. maximum 10 pieces of this product can be ordered. swordslife reserves the right to cancel orders over 10 units. more than 100 stocks are available to be sold at the campaign price. a product can be sold by more than one seller. sellers of products offered for sale by more than one seller are listed according to the price they set for the product, seller ratings, delivery status, promotions on the products, whether the cargo is free or not, whether the products can be delivered with fast delivery, and the stock and categories of the products. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.