Here's an updated picture of the ebb and flow system. Almost all the plants that have been transplanted are doing very well on 1/2 strength nutrient. The 400W Metal Halide (MH) bulb is 24 inches above the top leaves. I definitely had it too close when I switched lights from fluorescent to HID, and it burned some of the smaller leaves, but they all seem to be recovering nicely. I also transplanted all of the tomatoes in 8" pots to 5" pots so there is more room in the grow tray. PH is being maintained around 6.5 as far as I can tell. I have a digital meter on order that will give me more precise readings.
Wednesday, October 31, 2007
Hydroponic update
Here's an updated picture of the ebb and flow system. Almost all the plants that have been transplanted are doing very well on 1/2 strength nutrient. The 400W Metal Halide (MH) bulb is 24 inches above the top leaves. I definitely had it too close when I switched lights from fluorescent to HID, and it burned some of the smaller leaves, but they all seem to be recovering nicely. I also transplanted all of the tomatoes in 8" pots to 5" pots so there is more room in the grow tray. PH is being maintained around 6.5 as far as I can tell. I have a digital meter on order that will give me more precise readings.
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