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New drip system question

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Old 03-27-2011, 01:23 PM
Twilly Twilly is offline
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Join Date: Jan 2011
Posts: 18
Default New drip system question

I just setup my first drip system to grow some Potatoes and Carrots. I used sand and vermiculite as a medium, and I placed 2 - 3/4 in pvc pipes with holes in them in the bottom covered in a cloth sock to allow excess water to drain back to the res. I have the drippers connected to my NFT system pump which is on all the time, and I used 8 - 1/2 gal per hour drippers from Lowes ( But these are designed for full water pressure, so I'm sure they are not dripping 1/2 gal per hr )
My question is, am I going to drown the plants? What type of pump cycle do you use?

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Old 03-28-2011, 12:48 AM
GpsFrontier GpsFrontier is offline
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Join Date: Mar 2009
Location: Lake Havasu AZ.
Posts: 1,855

Hello Twilly,
It looks like there will probably be somewhere between 1/2 and 1 inch of water in the bottom all the time. I don't see a problem with that, as long as it doesn't fill faster than it can drain. With my limited experience with growing in sand (just got it running yesterday), I wouldn't want the dippers running 24/7. Right now I have the system timer set for 30 min on, and 2 hours off. But I expect to be adjust it as I go.

The system is filling faster than it can drain, so 30 min on floods it all the way to the top of the sand. It's dark right now, but I plan to fix that problem tomorrow. If adjusting the flow rate on the pump doesn't work, I will split the feed line, insert a "T" connector and split the flow to the container in half. I will also look for that old fountain pump I have. It's much smaller, but I'm not sure how reliable (it's what I planed to use for this system anyway).

P.S. I'll post pics of it in a day or two. I germinated seeds and placed them on top of the sand mix, then covered them with about 1/4 inch more of the sand mix. So there isn't really anything coming up yet. I'm also resurrecting another system I grew my peas in. I have 6 mini sweet pepper seedlings to place in it, and should have that done tomorrow as well.

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