NFT

Great Job! The NFT is looking great, and it's thanks to you! Don't forget to check the EC (it looks like pS on the meter) as well as pH,and to record it. You can either write it down in the book for the system, or type it into the computer log. Here is the link: greenhouse log I let you guys do this, not me, so if you forget to type it in, then we don't have data :( After you have finished with water testing you have some choices available to you: Thanks for all your help!!
 * scrub the holes
 * dip the roots into a bucket with a tsp of hydrogen peroxide and a few inches of water
 * spray or dab a little bit of hydrogen peroxide to clean off aphids off the white channels
 * make labels for the plants by getting a white sticky label and copying the name from the seed packet
 * transplant seedlings to nursery if there are holes
 * ask if you can harvest. If yes, then rinse off all the aphids and place greens in bowls/plates for tables
 * look to see if the seedlings need water (if you put your pinky in and your nail is covered in water, then there is already enough in the tray- let's not over water!)
 * arrange the plants so that the plants are next to the ones that look like them
 * ask if you can plant seeds or get the tray ready for another class
 * look through the seed catalogue and fill out an order form
 * check on the plants from the NFT that are in the ladybug hut. Do you they need water? Are there still aphids on the plants?
 * look to see if there are trays to scrub with a little hydrogen peroxide and a scrubby sponge
 * sweep under the NFT (or anywhere:)

Here is some info on the system: lettuce kale swiss chard NFT in New Zealand nft N.F.T. (Nutrient Film Technique) This is the kind of hydroponic system most people think of when they think about hydroponics. N.F.T. systems have a constant flow of nutrient solution so no timer required for the submersible pump. The nutrient solution is pumped into the growing tray (usually a tube) and flows over the roots of the plants, and then drains back into the reservoir. There is usually no growing medium used other than air, which saves the expense of replacing the growing medium after every crop. Normally the plant is supported in a small plastic basket with the roots dangling into the nutrient solution. N.F.T. systems are very susceptible to power outages and pump failures. The roots dry out very rapidly when the flow of nutrient solution is interrupted. what to plant in video of plants growing hydroponic basics Urban Farmer Magazine