Plant food?

[SHAD0W]

http://www.cdaquatics.co.uk/catalog/imagemagic.php?img=images/flo-boost.jpg&w=200&h=518&page=prod_info

I'm thinking of adding some of this stuff to my planted discus tank to help the plants grow.

Is it harmful to my discus?

[Sanke]

No

[Elliots]

Sanke, that is a four year old posting but it is always good to get an answer anytime.