Is it okay to plant (emersed) right away in a tank with a newly laid out MTS substrate? I bought a ready made MTS mix from n_seine and thinking of setting up a tank with the substrate. It came with directions on how to make a slurry and apply the sand topping. I've read that it's a nutrient rich mixture and wonder if it might burn the plants. Do I have to let it settle or mature before planting on it?