Capping organic miracle grow with Eco complete
I am redoing a 29 gallon tank and have two bags of Eco complete. I also have a bag of organic miracle grow. I would like to get the depth of the substrate around the 3 inch range, but the two bags of Eco complete wouldn't quite do the trick. Instead of buying another bag of the EC, and since I have the organic miracle grow, can I put down an inch of that and top it with the Eco complete? Any thoughts on this? Any advice? Thanks.