Deficiency in month old eco complete?
So riddle me this,
I set up a tank about a month ago using eco complete black. Plant growth was decent, decided to hook up pressurised co2 to see if I could boost the growth. So now I'm see light coloring between the veins on the plants, figure it's a magnesium deficiency. Could be wrong and if I am please correct me lol, but my question is, doesn't eco complete have enough nutrients in it to get more than one months worth of growth with out seeing deficiencies?
I know it's designed to have small grain material within to help plants break down soil faster for nutrient intake, so could it be an issue that I made a terraced scape so the beds are deep and all the fins settled past where the roots are currently?
I have pictures I can provide if needed