Great JP ! I too have been changing my tanks around. I got some of that Echo-Complete..(expensive as it is !)..and I have added some to my 5 gallon divided and one of the 1 gallon aquascenes...and also the 2 gallon hex. The plants I put in there are thriving and growing nicely. I put a layer of spagnum peat moss underneath the substrate..don't know what that will do, but I guess I'll find out...lol.
One thing I did notice is that one of the betta I have a consistant problem with irritated and shredding fins...is in the 2 gallon hex with the new "stuff"...havn't had a problem since with his fins. I think it may be due to the fact that the PH is now lower in that tank because of the peat...my PH usually runs 8 and over, but with the peat it's about 7.4-7.6. much better !
Here's a pic of the 2 hex...

I really like the new setup and plan on doing up the 10 gallon divided the same. That will use up the rest of my 20lb bag of Echo-C....dang..I like that stuff but it's so darned costly...I"ll probably get another bag anyway.. <img src="/images/graemlins/rolleyes.gif" alt="" />
I don't ever want to add up all I've spent in this hobby...I'll get depressed and not enjoy it so much anymore... <img src="/images/graemlins/blush.gif" alt="" />