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New to growing your own tomatoes? This is the forum to learn the successful techniques used by seasoned tomato growers. Questions are welcome, too.

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Old February 22, 2018   #811
shyxlilfox
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Wanted to thank everyone for sharing the wonders of DE. It outperforms ProMix by leaps and bounds! Recently transplanted some plants into a DE/ProMix mix, and the roots were long, well branched, and a healthy shade of white. I think they’ll be monsters once they go into the ground.

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Florence
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Old February 22, 2018   #812
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Is this the stuff?

http://www.truevalue.com/product/Aut.../338/75431.uts
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Old February 22, 2018   #813
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Quote:
Originally Posted by Hairy Moose Knuckles View Post

Yes it is! Happy Growing!
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Old February 23, 2018   #814
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@rockporter

Thank You!
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Old February 26, 2018   #815
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Can someone recommend a good liquid fertilizer to me for growing my tomatoes in DE?

I just bought a 25 lb bag of Optisorb at O'Reilly's and it was $17. It seems awfully steep in price compared to what I'm seeing here.
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Old March 5, 2018   #816
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I just bought 25 lbs. of this at O'Reilly's for $11 as they did not have any other absorbent medium. Could I still use this for starting seeds?

https://www.oreillyauto.com/detail/e...t/9805/4525770
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Old March 5, 2018   #817
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Quote:
Originally Posted by guruofgardens View Post
I just bought 25 lbs. of this at O'Reilly's for $11 as they did not have any other absorbent medium. Could I still use this for starting seeds?

https://www.oreillyauto.com/detail/e...t/9805/4525770
It looks like it is labeled 100% DE, so it should be OK. the different brands have different average size particles, but they perform similarly.

If you are using standard inserts or pots in a 1020 tray, you will find that the precut drainage holes in the bottom are much too big to hold back the DE. I turned my 72 cell inserts upside down and put masking tape over all of the drain holes. i turned the insert right side up, put it on a couple of layers of cardboard, and used a home made tool- 1/2 PVC tubing with 3 or 4 small finishing nails duct taped to it, to make new, smaller holes. If you use the original holes, you'll have a lot of DE wash out, especially if you lift the insert to bottom water.

Jim
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Old March 5, 2018   #818
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Quote:
Originally Posted by guruofgardens View Post

I just bought 25 lbs. of this at O'Reilly's for $11 as they did not have any other absorbent medium.
Oh hells bells. I asked for 5 bags from NAPA. They said I may need professional cleaning crews. Lmao. Also picked up some of the DE kitty litter at the dollar store.

Go big or go home I always say. Haha
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Old March 5, 2018   #819
guruofgardens
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Thanks for the reminder, Jim. I'm going to use the 36 cell trays and have cut coffee filters to put on the bottom of each cell. Yeah, the bottom holes are quite large for the DE.

I was very lucky to have mentioned my proposed purchase and a friend gave me a card for $10 off $20, so I really bought 50 lbs. for $13 including tax.

The particle size is not a powder, but very small(er) sized particles. Thanks for the OK to use this non-name brand stuff!

Last edited by guruofgardens; March 5, 2018 at 05:16 PM.
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Old March 5, 2018   #820
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Looks good to me. The manufacturer website info below. Happy gardening.
https://epminerals.com/products/floor-dry
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Old March 7, 2018   #821
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The PH is not the same in all DE products, (as stated in the beginnings of this thread). So if you are using something other than Opti or Ultrasorb then I would do a PH test and correct it accordingly. This will ensure that you have strong vigorous seedlings.
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Old March 17, 2018   #822
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Removed double post.
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Last edited by svalli; March 18, 2018 at 02:49 PM.
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Old March 17, 2018   #823
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Similar DE as in US is not sold here, but I have been using cat litter sand, which is made from Danish moler. It seems to perform as well as the real DE. I just started to transplant my tomato seedlings to coir and made a video about how easy it is to get the plants from the moler.



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