How To Build A Hydroponic System

What is the NPK ratio for tomatoes?

Both hydroponics and soil. And also for vegetative and flowering stages.

A balanced "10-10-10" Fertilization is the best at all times of the growing season for tomatoes. There are different recommendations for fertilizer such as 8-8-8 or tomatoes 16-16-16 etc, but they are all balanced fertilizer. For hydroponics proportion. Below are some links to help the University of Florida is very informative, but probably will give you information overload.

Vegetable Gardening & Plant Care : Plants Grown Using the Method of Hydroponics

Dutch Master Add 27 Flower & Grow Hydroponic Nutrients $39.99

General Hydroponics FloraBloom 1 qt Fruiting Flower $13.50

General Hydroponics Liquid Koolbloom gal Forces Flower $63.50

General Hydroponics Dry Koolbloom 2.2 lb. boost flowers $32.88

General Hydroponics Dry Koolbloom 2.2 lb. boost flowers $20.88

General Hydroponics Dry Koolbloom 2.2 lb. boost flowers $32.88

General Hydroponics Dry Koolbloom 2.2 lb. boost flowers $23.88

Botanicare Power Flower for soil or Hydroponic 2-2-5 $7.99

General Hydroponics Liquid Koolbloom Quart boost flower $32.88

Fox Farm Happy Frog Fruit & Flower Hydroponics - 4 Lbs. $18.90

Fox Farm Happy Frog Fruit & Flower Hydroponics - 4 Lbs. $8.95

Dutch Master Max-Fx Flower Hydroponics - 5 Liter $98.95

Dutch Master Max-Fx Flower Hydroponics - 5 Liter $112.90

Dutch Master Max-Fx Flower Hydroponics - 1 Liter $24.95

Dutch Master Max-Fx Flower Hydroponics - 1 Liter $34.90

Dutch Master Gold Flower B Hydroponics - 5 Liter $49.94

Dutch Master Gold Flower B Hydroponics - 5 Liter $35.99

Dutch Master Gold Flower B Hydroponics - 1 Liter $13.99

Dutch Master Gold Flower B Hydroponics - 1 Liter $23.94

Dutch Master Gold Flower A Hydroponics - 5 Liter $49.94

Clonex Rooting Gel 100ml $15.95 Clonex Gel is a high performance rooting compound that remains in contact with the stem, sealing the cut tissue and supplying the hormones needed to promote root cell development and vitamins to protect the delicate new root tissue. Clonex has a full spectrum of mineral nutrients and trace elements to nourish the young roots....

pH 7.0 Calibration Solution 8 Ounces $6.90 General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our solutions are exactly calibrated each time they are used....

pH 4.0 Calibration Solution 8 Ounces $7.95 General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our solutions are exactly calibrated each time they are used....

Claber 8053 Oasis 4-Program/20 Plant Garden Automatic Drip Watering System $72.89 Claber's award-winning Oasis Automatic Drip Watering System is the perfect solution for watering your plants when you're away for the holidays, on vacation, or just short on time. Ideal for indoor use, the Oasis provides a consistent, perfectly calibrated amount of water to as many as 20 plants for up to 40 days. And since it operates totally independently of faucets and electrical outlets, you wi...

Claber 8583 Koala Indoor Faucet to Garden Hose Connector $5.99 Koala, Black & Orange, Indoor Faucet Connector, Attaches Hose To Indoor Faucet, Completely Watertight, Easy To Install With No Tools, Male Threaded Hose Connector Included....

Luster Leaf 1840 Rapitest Soil pH Meter $14.80 Use probe to instantly test your soil for acid or alkaline. Then use information included to find which plants are best suited for your soil and how to alter the soil conditions. Also included is a plant care booklet which lists over 400 pH levels....

High Pressure Sodium Grow Bulb This is a 400W High Pressure Sodium replacement lamp to be used with any 400W HPS ballast or light system. This is the highest quality lamp available for secondary or supplement lighting. This type of lighting is excellent for flowering and budding in plants....

Organic Sunflower Sprouting Seeds (Un-Shelled)- 2 Lbs- Edible Seed, Gardening, Hydroponics, Growing Salad Greens, Sprouts & Food Storage - Sun Flower $9.95 2 Lb. Resealable Pouch of Certified Organic Unshelled Sunflower sprouting seed. Prime-quality, high germination, specially selected, microbial tested. Fresh, crunchy sprouts in 3 to 5 days! Nutritional info: Vitamins A, B, C and E Calcium, Iron, Magnesium, Niacin, Phosphorus, Potassium Protein: 25%. Instructions for Sprouting: Sunflower Lettuce may be grown by placing the soaked drained seed close...

Organic Sunflower Sprouting Seeds (Un-Shelled)- 8 Oz. (1/2 Lbs)- Edible Seed, Gardening, Hydroponics, Growing Salad Greens, Sprouts & Food Storage - Sun Flower $3.42 8 Oz. of certified organic Sunflower Seed. Sprouts are fun to grow and are extremely healthy.Sunflower sprouts are high in fiber, protein, essential fatty acids, vitamins A, B complex, C, potassium, magnesium and the trace elements zinc, manganese, copper and chromium....

The Complete Guide to Home Gardening & Gardening Design $9.00 Contents:The Basics Of Designing GardensGardening's Most Valuable AdvicePicking The Ideal Location For Your GardenChoosing The Best Plants For Your GardenPicking A Healthy PlantPlanning Your Summer GardenPlanting A Summer GardenSummer Gardens For ButterfliesLow Water Summer GardensKeeping Mosquitoes Out Of Your Summer GardenMore About Butterly GardeningPlanting Seeds.Advantages Of Organic Hydropon...