Home Made Hydroponics System

Where to begin in a project for the science fair to find the effect of pH on plants grown hydroponically?

for the fair science that I will grow plants hydroponically in water of different pH. first off do not really understand the hydroponic culture medium .. I just put the plants in the water with the proper nutrients? and what kind of plants should I use? Please Help:)

Well, I think it's best to start at the library and read about hydroponics.

Hydroponic baby lettuce and micro-greens

Grodan Rockwool 1.5 cubes (45/Pack) $5.05 Three strips of 15 wrapped Mini-Blocks - 45 total blocks each measuring 1.5 in. square. ...

A'Ok Starter Plugs - 1.5 in. sq. Sheet of 98 starter cubes - Grodan Stonewool $8.00 Made in Denmark since 1969, horticultural stonewool is widely recognized as an ideal growing substrate. Each Grodan A'Ok Starter Plug has a pre-formed hole to insure easy seed or cutting placement. Gardeners simply wait for plant roots to penetrate the bottom of each A'Ok Starter Plug before transplanting them into a larger stonewool cube or block. Grodan stonewool is known for its quality, consis...

Grodan Rockwool - 4x4x4in. Cubes, 12 pack, w/holes $8.55 Rockwool is an inorganic and sterile growing medium made from spun molten rock. A superior medium for rooting cuttings, rockwool provides 20% air space when saturated, and does not contain nutrients. It is recommended that rockwool be conditioned by soaking for eight hours in a pH 5.0-5.5 and then rinsing with pH 7.0 water. Water daily....