You're correct. The link is there if you type it but not otherwise, lol. Pretty interesting stuff there. Since you're not at the point of resorting to copper, then I would suggest that you try to correct your water parameters instead.
As Tom Barr states:
"The point is to kill what's there in the water, then correct conditions and not have the reoccurance."
It sounds like you're on top of things. You mentioned that you switched it over to a planted tank 14 months ago. When was the last time that you replaced the bulbs on either of those fixtures? The reason that I ask is because I used to have quite a bit of various types of algae growing in the tank, but that was due to old bulbs. Within days after I changed the bulbs, I noticed that the algae was disappearing and not a trace of it has come back (other than the algae that covers the glass, which gets cleaned off during water changes). If you haven't replace the PC bulbs for awhile (14 months or so) or the 20W in the strip (even shorter life span versus a PC, on the order of 6 months or so), then I'd seriously replace them and see what happens.
On another note, you might want to run the tank a little leaner. If you can, cut back the ferts to half the of what you're doing weekly (i.e. lower NO3 to around 5 ppm and PO4 to 0.5).