18V ONE+™ 1 Gallon Chemical Sprayer Replacement Tank

Model: #AC1GAL

4.3 | 15 Reviews
The RYOBI 1 Gallon Chemical Sprayer Tank is compatible with both the RYOBI 18V ONE+™ 1 Gallon and 2 Gallon Chemical Sprayers. Mix your fungicide, herbicides, or pesticides into their own designated tank so you can store your chemicals separately when not in use. Equipped with a cap that doubles as a mixing cup, this spare tank accessory is built for convenience from prep to clean up. Simply attach this tank to your existing RYOBI 18V ONE+™ 1 Gallon or 2 Gallon Chemical Sprayer, start and spray without manual pumping.


This is a consumable item and therefore is not covered by a warranty. It is warranted against defective parts and labor only and not from misuse or deterioration of the product through normal wear and tear.

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  • Tank Size: 1 Gallon
  • Tank Material: High Density Polyethylene
  • Weight: 1.5 lbs.


  • 18V ONE+™ 1 Gallon Chemical Sprayer Replacement Tank
  • Measuring Cap
  • Operator's Manual


18V ONE+™ 1 Gallon Chemical Sprayer Replacement Tank
18V ONE+ 1 Gallon Chemical Sprayer Replacement Tank is rated 4.3 out of 5 by 15.
Rated 5 out of 5 by from Great!!!!! I got hooked on Ryobi when the tools were blue. The chemical sprayer and extra tank already helped me Clear some spots on the backyard. Love it.
Date published: 2023-08-16
Rated 3 out of 5 by from Small cap missing Bought a two pack and buying another to handle all my uses. The problem is the small plastic cap came on one, but did not come with the other.
Date published: 2023-08-15
Rated 5 out of 5 by from Comes in handy I purchased this tank so I could have one tank for herbicides and one for pesticides. That way there's no cross contamination, so I'm not spraying my plants for bugs with a tank that had Roundup in it. It comes with a cap on the dip tube hole which comes in handy if you don't use all your spray you can store in in the tank for later. If your like me, you better label it.
Date published: 2023-08-12
Rated 3 out of 5 by from good idea...not great engineering. i thot i alredy reviewed this but...maybe not. this one gallon tank is a good idea but the siphon hose to the pump needs to be shorter. it leaves about a quart of product in the bottom when you get so frustrated trying to find the pick up point that you finally just give up.
Date published: 2023-07-14
Rated 3 out of 5 by from Unclear Instructions I just bought this sprayer and tank. I haven't used it yet. The instructions say not to use any liquid that is alkali or acid. You should specify what liquids that should NOT be used. I bought this to spray bleach on my pool deck, and bought an additional tank for spraying round-up weed killer. I have no idea if these liquids will harm the sprayer.
Date published: 2021-10-26
Rated 5 out of 5 by from It's great to have a second tank I can mix enough to do the whole job and just switch tanks when the first one is empty. No need to stop to mix more just swap the tank in seconds and continue spraying.
Date published: 2021-01-18
Rated 5 out of 5 by from Great addition to my sprayer! Bought this to have a second tank for my sprayer. Works great. Looking to order a third.
Date published: 2020-10-05
Rated 5 out of 5 by from Extra tank Nice to have an extra tank to have cleaning solution to do final cleaning of the system
Date published: 2020-09-21
Rated 4 out of 5 by from Very convenient I purchased a 1 gallon sprayer because my son-in-law got one for my daughter. Just figured I would get an extra tank so I could switch them out quickly
Date published: 2020-09-01
Rated 1 out of 5 by from Engineers pov Cap broken after 2 months of use. Plastic cup is defective. No metal alternatives exist sadly.
Date published: 2020-06-30
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