Learn your hydroponic garden if this is your first time using it. Locate the growing pods, watering tray, on/off switch and any covers, and make sure that the circulation system is intact.
Fill the growing pods with peat moss, vermiculite, perlite, sawdust or another soilless growing medium. Hydroponic gardens use a soilless growing medium to eliminate mess and keep weeds and pests out of the system.
Plant Buckeye grass seeds 1 inch deep in your growing medium, with three, four or five seeds per pod.
Put the growing pods back in their place and put the hydroponic garden in a spot where it will get plenty of air and sun. The hydroponic garden cannot satisfy a plant's needs for sunshine or air circulation, so keeping it in a dark, suffocating area will kill the plants you are trying to grow.
Mix a starter hydroponic nutrient solution with water, following directions on the package. Nutrient solution, available through hydroponic retailers, replaces nutrients the Buckeye grass would normally pull from the soil. Fill the watering tray with this mixture and turn the system on. Always use pre-mixed solution or mix it according to the directions, as too little nutrition will cause the grass to fail while too much will burn the roots and grass.