Tetra - Arowana Vital & Azoo - Aro Vitamins

[1goodcatch]

I was doing some reading up on this and want to know if anyone has used these products and seen significant improvements?
This stuff is not cheep, Lucky has Vital priced at $37-38.00

http://www.luckyaquarium.com/index.php?option=com_content&task=view&id=18&Itemid=27

thanks