School Hydroponic Project

soiled(ZONE 8)December 4, 2008

I go to Alpharetta Highschool, and we have a really big engineering program. We have master projects where we have created things like a steam powered catapolt, a hover craft, and a drawbridge. Currently, we have been assigned to grow lettace with a hydroponic system. we have a growing medium, and we are not sure how long we should leave the light on and how long we should let the watering system work (it's a flood/drain system)

If there is any helpful hints or concepts that we could use, I would appretiate the advice.

Kyle

Thank you for reporting this comment. Undo
grizzman

I would think 4 flood cycles a day should be sufficient, but that really depends on how much and what kind of medium you're using.
I've never known a plant that didn't thrive in a 16/8 light cycle. well maybe peace lilies, but never a vegetable.
With lettuce you need to be aware of temperature. too high and you're plants will bolt.
good luck.

    Bookmark   December 4, 2008 at 1:05PM
Thank you for reporting this comment. Undo
greendude(Arctic Wisconsin)

Also I would posit that the type of lettuce you are growing makes a difference because of temperature tolerance (as mentioned above, but they vary) and the amount of time for maturity. How long do you have for this project? Do you just have to demonstrate that you were able to get something green to grow, or are you judged on how large/well it grows?

    Bookmark   December 4, 2008 at 2:52PM
Thank you for reporting this comment. Undo
soiled(ZONE 8)

we shall adjust the light to 16/8 and also the flood to 4 a day.

We have another 2 weeks before this is due, and it is just to see if we can get something to grow.

We are using a Stone Wool growing medium. But, honestly we have no idea what that actually means. The medium is completly soaked so we set the heat lamp on longer a day so that the seeds won't drown.

    Bookmark   December 5, 2008 at 10:59AM
Thank you for reporting this comment. Undo
garysgarden

A heat lamp won't do you any good.

I've grown hydroponic lettuce (it's arguably the easiest thing to grow in hydroponics) and you don't need a large amount of light but you do need a certain amount. If you want to save money, get several (like 4) 100w equivalent CFL bulbs. That should cover about 2 square feet of growing area pretty well.

Get the daylight kind, those are best for leafy plants like lettuce.

Your rockwool shouldn't be soaking wet, either.

It's probably too late now, but you might check out DWC or "raft" type hydroponic systems instead of Ebb & Flow. Lettuce grows unbelievably fast in DWC.

    Bookmark   December 5, 2008 at 8:47PM
Sign Up to comment
More Discussions
coco peat as a medium
I have been using cocopeat for a very short while,...
theflgardener
Lettuce is infected
Can anyone tell me what my lettuce is being infected...
SNosko
New to hydroponics
I just found out about the idea of hydroponics after...
kesaber
Hydroponics
Hi all! I'm a beginner at hydroponics gardening......
skttls
cilantro grow questions
I am new to hydroponics and thought i would start with...
morb1lee
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™