No I cant seem to find the link, but it is super easy to construct. Here are links to suppplies you would need...
Its fairly easy to build and operate.
Cayenne, I am not terribly worried about ph up and ph down, but my tap water is pretty good from the start. I am not sure what my ppm is and dont really care, the plant is thriving, so it is happy, updated pictures will be put up later today, but I warn you all, this thing has gone freakishly mad on me in the last week, doesnt even look like the same plant, its unreal...