I have a 20 Gallon long aquarium I'm setting up. I have Nicrew LED lighting and an Ultum Delta 60 filter. I want to use CaribSea Peace River as my substrate, at least for the top layer. Should I just use Peace River alone or should I put down another substrate like Eco-Complete as the bottom layer first? I plan on easy to care for plants such as a beginners package sold by Dustins. I don't mind using ferts or grow tabs since I'm trying to stay away from expensive aqua soils. Also, If I wanted to use the dirt soils could I just pot the plants and use use soil in pots?