Call the Customer Service people at SeaChem and let them know of your problem. They did change their product some time back due to running into a different vein of raw materials. They did not do so intentionally but out of necessity. The color even changed!! Not a good thing for the consumer.
I love EcoComplete. In fact, I located a lot quantity of the old stuff earlier this year and bought the whole pallet. It weighed a ton(literally, 2000#).
I have tanks with ADA, tanks with pure Florite, tanks with a Florite/flint blend, and tanks with EcoComplete for Planted Tanks. All do well. I do think that the root systems in thetanks wi hEoCmplete are more massive and strong than the other products.
If, I can find the time, definitely at a premium right now, I will pull some of my Amazon Sword plants, which have huge root systems(I need to split some anyway) and take pictures to let you all decide. But I must find the time so please be patient.
I know that the root systems on the tanks with EcoComplete have as much growth below the soil as above. Simply amazing to me since I have never had this much success with plants in all of my years in the hobby.