Ron, your fans are best placed so that they exhaust the hot air of your greenhouse to the outdoors. Most greenhouses have them built into the walls so that they turn on the fans and they exhaust the air out. Blowing the how air around will not be helping much to cool the plants and remove excess humidity. You need to be moving the hot air outdoors. Greenhouses can be 20 degrees hotter than it is outside. Ideally, you should have fans and doors on both ends of the house. One to blow cool air in and one forcing the hot air out.
One wick in the center of the pot should be fine. It works for everyone else. I think that if you are making more pots that you should use just one so that the plants are not too wet. I just can not stress it enough that these plants like to be on the dry side and that wet feet will do them in. Many people use a rain gutter to hold the water for their self watering containers. Take a look here in the container forum. There are many people here using self watering systems. That is what the container forum is all about.
Regards ~ Patti
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~ Patti ~
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