Is Nutrient PPM 360 too low for Tomatoes
I bought dry nutrient variety pack from ebay as importing nutrient solutions or concentrates to India is very expensive.
I am not sure if it is ok to link to an ebay item. Therefore, please search for "AeroGarden Herbs Orchids Flowers Nutrient Variety Pack" for the exact item I am referring to.
When I mixed the pack with 1 US Gallon of water, I got a PPM of 360. As per the instructions that came with the shipment I am supposed to dilute it to 1/4 or 1/2 the concentration if using on seeds or full strength if using for grown up plants.
Wherever I search on the net I find that the Nutrient PPM should be in the range of 1500 PPM. According to the How To Hydroponics book by Keith Roberto, it should vary between 1400 and 3500 PPM.
I am confused! Should it be 1400-3500 PPM or 360 PPM as the seller implies?