Hello z...
Most use the organic version on the bottom of the tank covered with another, less messy substrate. I've used it in small plastic pots covered with pea-sized gravel. It works very well for Amazon swords and any of the Anubias plants. I used it specifically so I could move plants around in the tank to take advantage of different kinds of spectrum light I had in my tanks. The miracle-gro will nourish the plants for around 6 months and then it tends to lose potency. I like to use hydroponics liquid ferts too. There are any number of ways to nourish your aquarium plants.
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