Greenway Biotech, Inc. Tomato Fertilizer 4-18-38 Powder - Water Soluble with Chelated Micronutrients for Tomatoes Peppers Eggplant - Bigger Fruit Better Flavor - Hydroponics or Soil - 1 LB

The Biotech product is water soluble and can be applied in a dedicated pump up sprayer. Tomatoes have a relatively short growing season and are in constant need of replenishing nutrients and trace minerals to support such rapid growth and prolific fruit production. The NPK balance of the Biotech product ensures you do not get more N than P and K. Nitrogen is best applied as a Calcium Nitrate about every three weeks to help with growth as wells as prevention of blossom end rot due to calcium deficiency. The P and K help with fruit production and root development and are essential to producing a good crop.

Bought this product late December 2017 along with a bag of nitrate and a carton of Epsom Salt. I am growing tomatoes in my little green house here in Orange County, CA. I use Home Depot 5 galleon buckets and fill it with pearlite. So far I am having the best success I have ever had. I am growing winter tomatoes along with Early Girl and am amazed at the amount of tomatoes and the health of the plants. No crunchy brown leaves, I take the companies suggestion to weigh the fertilizer and use,( as per the MPH Gardner formula, which is on Youtube ) 12 grams of the product along with 12 grams of the nitrate and 6 grams of Epsom Salts in 5 galleons of water....which gives you an 19-18-38 NPK. Obviously, I am very pleased and will continue to use the product to grow my veggies.

I have used this for the past few months as a base for all plants in my hydroponic garden. It is easy to mix and completely dissolves without using alot of mixing. As a general nutrient, I add calcium nitrate and magnesium sulfate differently for each plant. PPM / EC results are very predictable and accurate as described on the instructions. My mixes vary from EC 0.8 to 4.5 and I can hit the mark every time. PH does not go wild with this, it usually finished between 5.8 and 6.1 using Reverse Osmosis water. I have to do very little if any adjustments to the PH. Many liquid nutrients required heavy adjustments, not this. The resealable bag is rugged and designed to stand up without tipping or ripping. They do have a bulk option which I just purchased 25 lbs of each, tomato and calcium nitrate. It's the best so far. I grow tomatoes, bell peppers, Lettuce, cucumbers and flowers with this as a base for my hand mixed nutrients. Greenway Biotech is now my vendor for my nutrients. High quality at a reasonable price. You can't beat that.

The product arrived quickly and was well protected in transit. We grow tomatoes in our garage year round in a hydroponic system. This fertilizer is dialed in to exactly what tomatoes need to flourish when growing. It is easy to mix with water and has detailed instructions for both soil based and soil-less systems.

Been using this product for 10 years, it works great for hydroponic tomatoes. I used to be able to buy my nutrients in-person at their local HQ, and they were very welcoming to me just walking in. Even their 160lb russian terrier was friendly. But it seems they've relocated and now I'm forced to have it shipped. This is my second order in the last 4 months and both times the packaging was damaged to the point that it was leaking powder through the cardboard box. The bag that they put it in is thin paper, not the thick resealable plastic bags that were suitable for storage.

Never have tried to grow Tomatoes without soil before. The plants seem to be doing well and are growing and producing buds. Hoping to see tomatoes set on the vines soon.

I use this fertilizer on my roses and clematis as an amendment. It is wonderful. It is loaded with potassium which is what the plants need to produce flowers.

I recently switched to this for its lower nitrogen and better potassium and phosphorous ratios for my hydroponic tomatoes and other vegetables. Within 3 days the Romain brightened considerably and the collards doubled in size while those in the ground fertilized with Miracle Grow only marginally grew. In addition it requires only a fraction of the amount. My tank requires 6 tablespoonful for regular concentration while this requires less than one.