I haven't had any issues with Eco-Complete Planted clouding...so thats weird. This was a new tank set-up right? How does the tank look now? When the Eco-Complete was in the bag did the liquid look milky or anything? Because I remember at one point Carib-Sea had a manufacturing issue and pumped out a bunch of bad bags...
Also Eco-Complete comes in a couple different forms: Planted Black, Planted Red, Cichlid Gravel, Cichlid Ivory Coat, and Cichlid Sand.