GHL, the German controller company that makes high end tech products for our industry, has been consistently bringing out goodies for us hobbyists. I was asked to cover this unit for Reefs.com, and to learn about it, I went to Port Saint Lucie to visit my friend Chris Portale of The Fish Store / Custom Aquariums to find out everything about GHL’s all in one dkH reader and doser in KH Director. Check it out!