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Poly Storage Tank - Square, 30-Gallon Capacity, Model Number 2390

Based on 912 reviews
Condition: New
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$188.91
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Availability: Only 2 left in stock, order soon!
Fulfilled by Amazon

Arrives Nov 28 – Dec 2
Order within 21 hours and 38 minutes

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At a glance

Condition
New
Size
30 gallon
Dimensions
24.5 x 20.1 x 22.8 in
Weight
18 lb

Features 5

  • 30 gallon capacity
  • Thick walled, heavy-duty design
  • Molded-in graduation marks in gallons & liters
  • Translucent polyethylene material for easy visibility of water

Description

In Indiana, a charge of medium‑density polyethylene enters a rotational mold and emerges as a precise 30 gallon water tank—a horizontal square reservoir designed for everyday reliability. The natural, translucent wall lets operators verify fluid level instantly, while molded gallon and liter markings provide an exact read. Outdoors, UV‑stabilized poly resists fading and warping; in service, it won’t rust or corrode. A 5‑1/2" lid (5" opening) and easy‑tighten cap simplify refills, and a built‑in bulkhead fitting with a 3/4" NPT outlet makes fast work of draining, siphoning, or hose connection. Molded tie‑down channels accept saddle straps so this portable water tank rides securely as a truck bed water tank or trailer water tank, ready for farm chores, job sites, and water tank for car detailing setups. Rated for non‑flammable liquids to 140°F, it serves confidently as a potable water tank, a rugged water storage tank, or an RV water tank for extended trips. Made in the USA, it’s engineered for cleanability, durability, and dependable performance wherever you need compact capacity and square‑profile stability.

Specs 4

Product Dimensions 24.5 x 20.1 x 22.8 inches
Item Weight 18 pounds
Manufacturer RomoTech
Item model number 82123909

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Nov 28 – Dec 2

Yes, absolutely! This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2027.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


50 gal water tanks for fresh water delivery and wast disposal
Size: 50 gallon
I use this tank to bring fresh water to our RV and I use a second tank to remove wast from the RV. The tanks are well made and a good value. Be careful to have a good pickup location when delivered, these takes are big. It took a few weeks to get them. I would make a few changes to the tanks that would fit my use case. Make the tanks 1.5" lower. I have the two tanks side by side in the bed of my pickup truck. I had to shave off the fins on the black screw in cap on the top of the tanks so I could place the flat rigid pickup bed cover on. I would also place the tank fill port a bit lower so there is less water in the bottom of the tank after it's drained. I got around this by screwing a right angle GHT thread hose adapter on the inside of the fill port of the tank and then pointing the adapter right angle face down. I hooked a $60 12 volt Seaflow SFDP1-030-045-33 pump on it. It now drains the tanks almost dry. I also placed the tanks on a 1/2" board at the front of the tank, elevating the front to drain it better. I will include a picture but understand this is not completed. I will end up with two pumps mounted in the bed of the truck wired to the battery with switches on the dashboard for each pump. I am now working on installing a macerator (Jabsco model 18590-2092) on the RV that will pump the wast to the 50 gal wast tank. One important part is the (BANJO Reducing Coupling, 1 1/2 X 1 In Fpt, Poly). I have not got this part yet but I think it will allow me to connect the macerator to a 1" pipe that will connect to a 1" port I will install on the RV dump tube. I will run a hose from the pump wast outlet to the wast tank in the pickup. I think the whole thing will cost less that $600. Now I will no longer need to pull my travel trailer to get fresh water or to dump wast. I use the pickup truck to do the transfer. In the picture notice I have wired the two take to the bed of the pickup with steel cable and turn buckles. I am a full time RVer so I went to the local post office and set up (with out cost) a general delivery account where Amazon can deliver. I should make a few other points, the upper port on the top of the back side of the tanks I cut my self. I bought the gray threaded port fittings from Az as well. If I were doing the again I think I would put the ports I cut in the take on the top near the back instead on on the back side this is because, you will notice I run the city water through a blue RV water filter before the fresh water enter the tank this filter removed the chlorine so we add a table spoon of Chlorox is no different then the chlorine used to chlorinate drinking water. I also purchase a low cost chlorine testing kit and test the chlorine level after we pump the water into the RV fresh water tank. By placing the port on the top of the tank it would make it easier to pour the chlorine into the tank. I could remove the large black cap form the top the take and put the chlorine in there but found it easier to not fold back the pickup bed cover that farther than shown in the picture. ... show more
Reviewed in the United States on August 17, 2019 by Andrew Hopkins

Great tank for water hauling!
Size: 100 gallon
I live off grid and use this to haul my water. I drive a van and this tank fits perfectly into the side doors. It is a great way for me to get 200 gallons without the need of a trailer. It looks great, the material is nice and sturdy. It functions as it should and has not gotten brittle from the sun as I was worried about. ... show more
Reviewed in the United States on July 13, 2026 by John T

Worth the money
Size: 50 gallon
Solid build
Reviewed in the United States on July 30, 2026 by DS

Very sturdy tank
Size: 100 gallon
Nice 100 gallon tank. No bulging at all when full. In the close up pic of the tank it has 105 gallons in it. The truck is slightly nose low so it would look more full if level. Very easy to fill and has a pressure relief valve in the cap. It has a female 3/4 inch NPT outlet, so I bought a plastic adapter male to male 3/4 NPT to 3/4 GHT (garden hose thread. I then could attach a Y adapter so I could attach two hoses. One hose will give me gravity fed cold water at the tailgate. And the other hose runs to the 12 volt pump in the truck bed that pumps water into the cargo trailer/RV conversion for the shower and kitchen sink. The Amazon source that offered free shipping ran out of stock. After a few days, I ordered the tank from another Amazon source that charged around $200 to Arizona for shipping. As soon as it shipped, the company with free shipping got them back in stock. So watch out you don’t end up paying for shipping if you don’t have to. I do recommend this tank. ... show more
Reviewed in the United States on December 17, 2022 by D. Fournier

Well, no leaks so far after a 13 months of continuous use for my indoor drip feed system
Size: 50 gallon
Well, no leaks after a 13 months of continuous use. I have read through some of the poor reviews and it appears that "the seam leaking" be a common complaint, but my seam has held up just fine after being filled to the 40 gal mark most of its life so far. I use this tank for a drip feed system for my indoor grow room, and it stays filled around the clock. Being in a bedroom, I would know immediately if even a single drop leaked. I only store plant fertilizer solution in the tank at 6.0 pH - no concentrated chemicals or anything like that. When it arrived, I noticed a date and a name human written in permanent marker - which I assumed was an inspector. The plug did need to be tightened, but I would check the plug on any tank that I buy. For my future tank purchases, I will admit that I plan on driving to a local farm tank supply store since returning a very large item via shipping/freight is crazy difficult even on a good day. ... show more
Reviewed in the United States on April 1, 2025 by J

Very late delivery and it leaked!
Size: 50 gallon
It arrived very late and was defective! I really need this, so that was a double disappointment. I am returning it to get a replacement and hopefully the new one will work as advertised and NOT leak!
Reviewed in the United States on September 28, 2026 by Williin

it works
Size: 50 gallon
only reason it's not 5 stars is that it bulges a bit at the seam in the middle... not sure if that will be an issue eventually but it's pretty well made, used it all summer
Reviewed in the United States on February 13, 2026 by That Guy

Calidad!
Size: 30 gallon
Buen Producto!
Reviewed in the United States on July 18, 2026 by Victor B.
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