Flourish Trace - Tropica Master Grow

I have been using the whole line of Flourish products. I've been really pleased with the results, but as you all know, its getting pretty expensive. Therefore I've been switching over to the PMDD as listed in the sticky.
It seems that the only things that cant be replaced are the Flourish Trace, and Flourish Iron.
Anyway, I'm running out of Trace, but I have a whole bottle of Tropica Master Grow, and I'm wondering if the Tropica would be a good substitute for the Trace. What do you think?

Ok - thanks for the info. And thanks a LOT for clueing me in on the Greg Watson site. I never knew there was a place that caters to PMDD stuff. They've got everything I could possibly need.

Thanks again