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Marni's New Intermediate Greenhouse

Discussion in 'Growing Areas' started by Marni, Oct 28, 2014.

  1. carl

    carl Active Member

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    Discharge into a big trash can with a sump pump, leading out to a spreading network of buried pipes/hoses?
     
  2. Marni

    Marni Well-Known Member Staff Member Supporting Member

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    The RO system discharge produces 100's of gallons several times a week so there is a lot of water involved. I've found that a sump pump will work only if you are going to hand water. For a drip system or soaker hose a shallow well pump would be needed.
     
  3. Ray

    Ray Orchid Iconoclast Supporting Member

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    Marni, how large of a system do you have? I have found that it's possible to throttle-back on the flush-to-pure ratio to save water, without adversely affecting the life of the membrane.

    The industry standard is 4:1, meaning 4 gallons in produces 1 pure and 3 gallons of flush water to dispose of, but the systems I sell are typically more like 2:1- to 2.5:1. Maybe newer membranes are just easier to flush.

    If yours is a standard system, swapping out a flow restrictor (under $5) can improve it.
     
  4. Marni

    Marni Well-Known Member Staff Member Supporting Member

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    Ray, I run it at 2 to 1 and have since 1996.
     
  5. Ray

    Ray Orchid Iconoclast Supporting Member

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    Glad to hear it!
     
  6. Catt Mandu

    Catt Mandu New Member

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    Marni, if you decide to plant Bermudagrass around the greenhouse when construction is done, the Bermudagrass won't mind the elevated TDS from the RO discharge; it is pretty salt-tolerant. There are other salt-tolerant landscape plants (many lists out there on the internet).

    I like to look of the greenhouse so far - good luck with it!
     
  7. Wade

    Wade New Member

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    I hope to add a 400 gallon system in the spring. Maybe we can exchange plans. I hope to be able to have 9 55 gallon drums under my South bench. I am now thinking that the pvc connections will be placed in the gravel floor and connect to the bottom of the barrels. I originally wanted to go through the sides of the barrels near the bottom but they have a slight curve which made that impossible. Any ideas on this would be appreciated.
     
  8. Ray

    Ray Orchid Iconoclast Supporting Member

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    Wade, do you mean 400 gallons per day, or 400 gallons of storage? I hope you mean the latter...

    As far as connecting the drums is concerned, i think that a bulkhead fitting intended for a thicker wall would work - you can add multiple rubber gaskets on each side, that will compress and make a tight seal to the curved surface when tightened.
     
    edub9 and Wade like this.
  9. Marni

    Marni Well-Known Member Staff Member Supporting Member

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    Wade, don't go through the bottom. If you ever have to move them it would be a nightmare. How far up is the curve of the barrel? I use a shallow well pump and have a float valve at the bottom to shut off the power to the pump when it gets low. Because of the screen and valve at the bottom of the pipe I usually have about 5" of water left in the bottom so you don't have to get it right at the bottom. Rather than rigid pvc pipe, I used hose and hose clamps to connect between the barrels so if the bulkhead fittings don't have to be completely horizontal. As Ray said, a couple of extra gaskets will make it work on a curved surface. Right now in a temporary set up I just use siphon action between barrels. The drawback to that is that a siphon from above takes a lot longer to move the water than something at the bottom with the weight of the water forcing it. What kind of a pump will you be using?
     
  10. Marni

    Marni Well-Known Member Staff Member Supporting Member

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    We've been dodging some much need rain this week, but with just one more panel to go it is almost to the point were rain won't matter. It still need a ridge cap and corner edging at the roof/wall and where the walls meet. I ordered Aluminet for the roof a few days ago. I am also interested in this material that a friend has started using. Also very light weight and easy. Has any one used any of this from Ludvig Svensson, a Swedish company with offices in Charlotte, NC? I have some scrapes of old green shadecloth that is woven in stripes (hanging on the corner of the greenhouse to the left) and I love it since the light moves on the plants.

    gh#2.Sat.dec.6.jpg
     
    Catt Mandu likes this.
  11. KellyW

    KellyW Orchid wonk Staff Member Supporting Member

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    Looking really good!!! Are those aluminum panel connectors and caps or polycarbonate?
     
  12. Marni

    Marni Well-Known Member Staff Member Supporting Member

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    They are aluminum. The corners will be galvanized right angle roof edging with a gravel stop to clip the shade cloth too. Much cheaper than using the special corners.
     
  13. Daethen

    Daethen Orchid Mom

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    Jealous!!!!
     
    Marni likes this.
  14. Alexey

    Alexey Well-Known Member Supporting Member

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    Great to see work in progress.
     
  15. Wade

    Wade New Member

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    It will be approx. 400 gal. total storage, Ray. I plan to use the pvc cement as well as a silicone caulk to prevent leakage. I would like to use 2" pvc pipe but I may need to drop it down to 1 1/2".
     
  16. Wade

    Wade New Member

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    You have a good point about it being unworkable if I ever have to do anything with them. If I drop to 1 1/2", I can go with a a flexible pipe. The barrels have a slight curve for 1 foot at the top and bottom so I have to deal with the curved sidewall. You mention that you use hose (I'm assuming garden hose). I was concerned about the ability to fill the 9 55 gallon barrels using smaller diameter hose. The pump that I'm using is a 1/3 hp pond pump. It is similar to a sump pump but with no shutoff. It gives me enough pressure for watering and costs around $60.00.
     
  17. Marni

    Marni Well-Known Member Staff Member Supporting Member

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    Wade I used high pressure hose, I think it was probably 3/4" with hose barb and hose clamp and through bulkhead fittings. I would stay away from cementing anything in place.. The hose is the sort of thing one would use for a dishwasher or such. Easily available at most hardware stores. I recently had to move them and it was a very simple matter. When my construction is finished I will set them up again behind the greenhouse.
     
  18. chicago chad

    chicago chad Active Member

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    Hang in there this week Marni. I know you guys are supposed to get drenched.
     
    Marni likes this.
  19. chrismende

    chrismende Waaaay too many! Supporting Member

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    I need to be doing that, too! It feels criminal not to - I offered the water to the small nursery that surrounds my greenhouse and the owner didn't take me up on it!
     
  20. chrismende

    chrismende Waaaay too many! Supporting Member

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    Boy, you can sure tell what my priorities are, on Christmas Eve! Lunacy and fervor someone wrote recently about orchid folks. That's me!