Determine how much product you need to mix up. If you have indoor plants, mix up a smaller batch; if you have many plants or outdoor plants, mix up a larger batch.
Measure 2 tbsp. of the fertilizer. Add the fertilizer to 1 gallon of purified water. Mix well with a spoon until dissolved. Replace the water in your indoor hydroponics bucket with this mixture.
Fertilize outdoor plants or large quantities of plants with a larger mixture. Using your measuring cup, measure 1 to 2 cups of fertilizer and add it to 5 gallons of purified water. Mix well with a spoon until dissolved. Water your outdoor plants with this mixture or replace the water in your hydroponic buckets with it.