yeast plant fertilizer Jack's Classic Water-Soluble 20-20-20 Fertilizer – Greenhouse Megastore
SKU: 29844322788
yeast plant fertilizer

yeast plant fertilizer Jack's Classic Water-Soluble 20-20-20 Fertilizer – Greenhouse Megastore

Sale price$23.26 Regular price$25.84
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Description

yeast plant fertilizer Jack's Classic Water-Soluble 20-20-20 Fertilizer – Greenhouse MegastoreWith Jack's 20 20 20, you can improve growth in almost any situation any plant, any stage, any weather. This all purpose fertilizer has a 1: 1: 1 NPK ratio with 20% each of nitrogen, phosphate and potash plus trace nutrients such as iron and manganese to promote larger, greener growth. Use it from the start or to "green up" existing plants. The water soluble formula makes mixing it easy for liquid feed either directly to the roots or on the leaves.

With Jack's 20-20-20, you can improve growth in almost any situation - any plant, any stage, any weather. This all-purpose fertilizer has a 1:1:1 NPK ratio with 20% each of nitrogen, phosphate and potash plus trace nutrients such as iron and manganese to promote larger, greener growth. Use it from the start or to "green up" existing plants. The water-soluble formula makes mixing it easy for liquid feed either directly to the roots or on the leaves.

From bedding plants and perennials to fruits, vegetables, trees and turfgrass, Jack's Classic 20-20-20 Fertilizer is the right feed. Though you can use Jack's fertilizer in an array of conditions, warmer temperatures are recommended so plants can make better use of the nitrogen. The manufacturer also suggests alternating with a fertilizer lower in phosphorus to prevent plant stretch over extended periods.

Jack's All-Purpose Fertilizer Features:

  • Versatile 1:1:1 NPK ratio.
  • Easily dissolves in water for spraying and fertigation.
  • Ideal for warmer weather and indoor plants.
  • Sold in four-pound tubs (single or case of six).

How to Use

For small volume mixing
Dissolve the following amounts in 1 gallon of water. An injector should not be used.
1/2 tsp. = 125 ppm
1 tsp. = 250 ppm
1 tbsp. = 750 ppm

Stock Solution

To make a STOCK concentrated solution for use with a fertilizer proportioner. Dissolve the following amounts of fertilizer per 1 gallon of stock water.

Stock Solution 100 ppm 200 ppm 300 ppm
1:100 (1%) setting 6.8 oz. 13.5 oz. 20.3 oz.
E.C. 0.42 0.84 1.2
1:200 (0.5%) setting 13.5 oz. 27 oz. 40.5 oz.
E.C. 0.42 0.84 1.2
1:15 setting* 1 oz. 2 oz. 3 oz.
E.C. 0.42 0.84 1.2
*When using a Siphonex or Hoze-on proportioner

Limit of Solubility in Hot Water = 3.5 lbs. per gallon.


Additional Information

Jack's All-Purpose MSDS (PDF)


Specifications

Total Nitrogen (N)....................................... 20%

2.1% Nitrate Nitrogen
17.9% Urea Nitrogen

Available Phosphate (P2O5)....................... 20%
Soluble Potash (K2O)................................. 20%
Boron (B).................................................... 0.02%
Copper (Cu)................................................ 0.05%
0.05% Chelated Copper (Cu)
Iron (Fe)...................................................... 0.1%
0.1% Chelated Iron (Fe)
Manganese (Mn)......................................... 0.05%
0.05% Chelated Manganese (Mn)
Molybdenum (Mo)....................................... 0.0009%
Zinc (Zn)...................................................... 0.05%
0.05% Chelated Zinc (Zn)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 29844322788

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Marylou
Pawtucket, US
★★★★★ 5
Windows OS only, Software Sketchy but works. Use with precautions and do a security scan afterwards.
Ok, I was really annoyed when I found out this waste ink pad causes the printer to be "end of life." I currently have the ET2800, and after 15,500 pages, I got this message. I own a small stationery business, which is why I print a lot. However, I used to work on large multi-function printers that had user-replaceable waste ink cartridges. I called Epson in hopes that they would just send me the part and be done with it. BUT NOPE, they wanted me to send in pictures, then I had to either send the printer in or get a certified technician to work on it. I looked online and found this, along with several videos on how a regular user can replace it themselves. It was easy, with no issues. You do need to physically plug the printer into your computer. OH, and the SOFTWARE is only compatible ON WINDOWS; it does not work on MAC OS and GOOGLE OS. Just FYI. The only problem I had was that the software, which is usually offered by third-party products from Amazon, has a sketchy website attached to it. BUT this was the best one to use because you DO NOT NEED A KEY to reset the waste ink counter. You simply use their application, and that's it. One tip I suggest is to uninstall or delete the application and its folder after you have finished resetting. Also, empty your recycle bin. Then run a quick Windows security scan.
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Reviewed in the United States on November 25, 2025
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Carole T.
Omaha, US
★★★★★ 5
Reset Software for Ecotank ET-4800
Excellent. Worked like a charm!
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Reviewed in the United States on May 6, 2026
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Kay
Houston, US
★★★★★ 5
Great Product - highly recommend
Worked great fixed problem….wonderful instructions easy to follow
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Reviewed in the United States on April 28, 2026
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Amazon Customer
Battle Creek, US
★★★★★ 5
Might Need to Turn Off Security Measures in Order to Download
I'm a 1st grade teacher and use my ET-2800 religiously. We own 4 of them, between home, my husband's and my classroom, and one for sublimation. I've printed over 15,000 copies on my school printer in the last few years and had no idea about the ink pad replacement until the error message popped up and wouldn't work anymore. I originally purchased a different set and couldn't get it to work. I was in panic mode so I ordered this set, which also originally didn't work. After really paying attention to the alerts that were popping up, I finally had to Google how to turn off my McAfee and Windows Security programs. They were blocking it from running. Once I did that, it was able to install and it is back up and running again. It did make me very nervous to turn them off but as soon as I got it installed, I turned them right back on and ran scans. So far I haven't had any issues in the last few days. The installation is extremely easy, it came with gloves, a screw driver, etc. Mine wasn't messy, so I didn't need the gloves or anything. It's also a 3-pack, so I left myself reminders for next time on how turn off the security. If you are having installation problems, turn off all of your malware security and that will probably help. Just make sure you turn it back on and run scans, the whole process with all of these websites seems shady and scary at first, but this one appears to be legit. I did read that Windows 10 and 11 tend to block sites that are deemed safe.
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Reviewed in the United States on December 13, 2025
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JamesJordan
Massapequa, US
★★★★★ 5
works great for great price
they are getting a great deal for three
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