Hi John,

I am not sure it is because of JBL Ferropol (or Ferropol 24) in your case, but my Rotala Rotundifolia sp. red in Ferropol dosed 2 feet tank is not red but instead green, yellow to orange. Other factors might have to do something with it, like NO3 level and the lighting intensity. Some says lower NO3 level and intense lighting will bring out the red followed by some Fe dosing. But of course running lower NO3, you at risk inducing BGA. Everything have to be in balance.

By the way, what is your NO3 level (ppm) and lighting (wpg). Care to share and help bring out the red?.

Best Regards