brown spots on sword plants
I have small brown spots on my sword plants some come on as very large spots that almost covering the plant leaf.
What is going on and how can I correct this situation?
I have 6.5 P.H. R.O. soft water, discus essential trace mineral supplement added, also use Flourish according to directions 0.07-0.01-0.37 84 F, CO2 injection, I did use substrate heat for a while but found it raised the water temperature to 86 F. I understood when I purchased it that it would not, but mine sure does. Your help would be greatly appreciated in this area. Steve