I do believe that Excel helps plants utilize ferrous iron more effectively, and iron is important to red color in plants.
Excel and red plants
I have four different red or pink stem plants in my 37g whose names I can't recall 
icon_redf). I was running two 2L bottles of DIY CO2 and I started dosing Excel hoping to clear up some algae. I wasn't using the OD method, I was following the directions. The color in these four plants became so vibrant! I had no idea one was supposed to be pink and green until I started the Excel.
I assumed that my CO2 concentration was too low so I added a third 2L bottle and stopped the Excel. My drop checker became a yellowish green. It's been at least a month since I did this and my plants are pretty much all back to being green. Why? Why would Excel make the plants red and pink but additional CO2 isn't?
-Lisa
icon_redf). I was running two 2L bottles of DIY CO2 and I started dosing Excel hoping to clear up some algae. I wasn't using the OD method, I was following the directions. The color in these four plants became so vibrant! I had no idea one was supposed to be pink and green until I started the Excel.I assumed that my CO2 concentration was too low so I added a third 2L bottle and stopped the Excel. My drop checker became a yellowish green. It's been at least a month since I did this and my plants are pretty much all back to being green. Why? Why would Excel make the plants red and pink but additional CO2 isn't?
-Lisa
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