Originally Posted by Qian Hu

Thanks for using our product and glad to know that you are satisfied with our products. The difference of the 2 products are as follow:

Ocean Free Pure Liquid:

Ocean Free Pure Liquid are extracted from river system which contains natural essence of Eco-system which can only be soluble in some solvent. Thats the reason why it is in liquid form.

OF Nature Earth:

As it is in Powder form, it is totally natural and it contains water soluble and non-water soluble substance. When it is added to your tank, depending on what is lacking in your tank system, OF Nature Earth will naturally top it up for you.