Anyone seen or used this product before?

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I am having one heck of a time finding this product called
Marex by Aquatronic. It said to be a antibiotic blend of Pyrimethamine and Chloroquine Phosphate. They say, "The first really effective copper substitute for treatment of Oodinium and/or Cryptocaryon" Apparently a wholesaler can only purchase from Aquatronics. Big Al's has had this product on order for me for almost a month now. Ugg...

http://www.aquatronicsonline.com/product/product6.htm

Has anyone seen this product in their LFS at all?
Anyone ever tried this product before?

I would love to hear your thoughts. Much appreciated in advance. Tanks a bunch