SKU: 29325078148

Johnson CO2 Generator

Sale price$695.25 Regular price$772.50
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Description

Johnson CO2 GeneratorNormally there are approximately 300 parts per million (PPM) of CO2 in the atmosphere; when this level is increased to over 1000 PPM, it results in higher production and better plant quality. The Johnson Generator provides up to 1500 PPM per unit in a 4800 square foot (446 square meter) greenhouse. By adding CO2, especially during the winter months when greenhouse ventilators are closed and when low CO2 concentration becomes a limiting factor in

Normally there are approximately 300 parts per million (PPM) of CO2 in the atmosphere; when this level is increased to over 1000 PPM, it results in higher production and better plant quality. The Johnson Generator provides up to 1500 PPM per unit in a 4800 square foot (446 square meter) greenhouse. By adding CO2, especially during the winter months when greenhouse ventilators are closed and when low CO2 concentration becomes a limiting factor in growth, growers are obtaining yield and bloom quality similar to that which is normally associated with spring and summer conditions.

Standard Features

  • Completely automatic
  • Includes a gas pressure gauge
  • 24 Volt gas valve
  • Automatic shut-off in case of flame failure
  • Easy installation - hangs from ceiling - requires no duct work
  • 18" diameter, 20" high, and only 21 pounds
  • Optional timer/thermostat available

How To Use It

When there is sunlight and the vents are closed, CO2 should be added continuously to your greenhouse. If the vents are opened because of heat build up the generator should continue to operate for about 2 hours and then be shut off. Approximately 1 lb. of CO2 per hour per 10,000 sq. ft. yields 1,000 ppm's of CO2. If CO2 level drops off from 1,000 ppm's to 500 ppm's on a clear sunny day, you can easily adjust to a higher burning rate to make up for the more rapid absorption of CO2 by plants. Most growers use their Johnson Generator daily in winter from approximately 7:30 am to 4:30 pm.

Specifications

Maximum area fertilized per unit*: 4,800 Square Foot
Cubic feet/hr. Co2 @ 60 F: 72
Pounds Co2/Hour: 8.25
Burner Range BTU/Hour: 20,000 to 60,000

*Based on adding 1,500 ppm Co2 to a greenhouse with one air change per hour.
Slightly less when burning natural gas.

Shipping Notes
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  • Delivery to the USA:
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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: 29325078148

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TcZ
Massapequa, US
★★★★★ 4
Swiss Quality from a good brand
Color: Grey
This is my 4th Tissot watch. I only have a few quibbles. The band adjusts by removing wide or narrow pieces, not by adjusting with pins with a range of holes. I prefer that way to adjust a metal band. The color blue of the dial is darker in real life than the picture. I also wish the day indicator was a little larger (or my eyes were younger).
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Reviewed in the United States on July 8, 2020
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Verified Purchase
Caleb teems
Omaha, US
★★★★★ 5
A LOT of watch for the money
Color: Grey
I purchased this piece with low expectations but was pleasantly surprised by the quality and overall esthetics. If you are a young man looking for your first watch that doesn’t break the bank, this is the one.
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Reviewed in the United States on August 22, 2023
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Verified Purchase
Sangay Choizang
Grantham, US
★★★★★ 1
Not giving accurate time.
Color: Grey
Watch looks so fancy and standard but regretted to say that the pins on the bands are coming out easily, and does not giving accurate time. doesn’t worth it. Wish i can return it if possible.
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Reviewed in the United States on March 26, 2022
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MingYolo
Dallas, US
★★★★★ 5
Great watch so far
Color: Grey
Very lovely watch. Feels quality and rather heavy.
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Reviewed in the United States on September 27, 2024
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Verified Purchase
Jose Correa
Fort Morgan, US
★★★★★ 5
Stunning Automatic Watch With TopTier Durability and Precision
Color: Grey
“I got this Tissot PRX for my cousin’s birthday and bro fell in LOVE instantly. This thing keeps time like a beast, never slows down, never lags. Automatic movement, so no batteries, no drama. Durability? Stupid good. You can hit it, bump it, live life rough, it still looks box fresh. Size wise it was almost perfect. I just had to remove two links, nothing big. It’s light, functional, comfortable, doesn’t weigh you down, doesn’t get in the way but more importantly I can say this watch is in everyone’s eyesight when we wear it. Cause of course I had to get another one! Basically. I gave him a very nice piece as a gift, and now he’s walking around like he owns Switzerland.
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Reviewed in the United States on December 11, 2025

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