Viewing post #2443411 by pyrapod

DaisyI said:

This thread gets funnier and funnier! I'm sure there is a giant conspiracy (led by me) to keep people from all over the world from building whatever they want, especially if it concerns bubbles

I really doubt your 95% transmission number. My greenhouse has 5 wall polycarbonate, its light transmission is 65%. Double glazed window glass is about 70%. Light transmissivity of bubbles as seen in your many diagrams would be extraordinary low as the bubble size is small. You can see through one bubble but pile them up and you see less. The thicker the bubble stack, the less light going through.

I also have major concerns about your claim that your greenhouse would never need ventilation. Just by logic, damp soil and green respirating plants make damp air. Its called humidity. The more dampness the higher the humidity. Then add still air - still damp air equals mold and fungus.

That's before you get to the carbon dioxide problem. If you have a really well sealed greenhouse, you will have to add a source of carbon dioxide or your plants will stall out. I could go inside and breathe deeply everyday - my own oxygen bar.

As they say in 'Shark Tank'... I'm out.

I am out too. I find this forum is strange. It won't allow me to post a guy who planted seeds in a floating medium, added some water and then he sealed it completely. He has kept that big glass jar inside his house and allow some sunlight coming in. Anyway, so far that plant has been thriving since 1960, more than 60 years, amazing! That is a perfect proof that plants grown in balanced CO2/O2 environment.

Well, for some reason, now I see the option for me to upload an image. Yes!


David Latimer's plant in sealed bottle

This is my last post here as I have been granted the right to establish this Discourse group forum: pyrapod.discourse.group