Flat Bottom Liquid Fertiliser Tanks
Polymaster’s flat bottom liquid fertiliser tanks are built for bulk on-farm storage, from 9,000L up to 50,000L. Bulk tanker loads into a heavy-duty polyethylene tank are the most economical way to store liquid fertiliser, saving the time spent mixing smaller batches on the day you need them.
Every tank in the range is manufactured in Australia in one piece, with no joins, seams, or part lines, and is rated for liquids up to 1.5 specific gravity.
FLAT BOTTOM LIQUID FERTILISER TANKS
Browse the Flat Bottom Range
| Code | Product | Capacity | Diameter (mm) | Height (mm) | Outlet Size (mm) | Top Fill Kit | ||
|---|---|---|---|---|---|---|---|---|
 | LFT9000 | 9,000L Liquid Fertiliser Tank | 9,000L | 2500 | 2260 | 50 | LFTK | |
 | LFT136000 | 13,600L Liquid Fertiliser Tank | 13,600L | 3100 | 2450 | 50 | LFTK | |
 | LFT22500 | 22,500L Liquid Fertiliser Tank | 22,500L | 3560 | 2800 | 50 | LFTK | |
 | LFT31700 | 31,700L Liquid Fertiliser Tank | 31,700L | 4100 | 3040 | 50 | LFTK | |
 | LFT50KL | 50,000L Liquid Fertiliser Tank | 50,000L | 4600 | 3440 | 50 | LFTK |
9,000L Liquid Fertiliser Tank
LFT9000
13,600L Liquid Fertiliser Tank
LFT136000
22,500L Liquid Fertiliser Tank
LFT22500
31,700L Liquid Fertiliser Tank
LFT31700
50,000L Liquid Fertiliser Tank
LFT50KL
Not sure which capacity suits your operation? Call us on 1800 062 064 or use the quote tool above.
BULK STORAGE
Save Time on Mixing
Bulk tanker loads into a heavy-duty polyethylene tank are the preferred and most economical way to store liquid fertiliser on farm. Because the tank holds the full mix, there is no settling out and no need for constant agitation, which saves the time spent mixing smaller batches on the day you need them.
Every tank is rated for liquids up to 1.5 specific gravity and includes a Liquidator level indicator as standard, so you can see what is in the tank at a glance. A support pole for the level indicator is not included.
SIZING GUIDE
How to Choose Your Tank Capacity
The right capacity depends on how much liquid fertiliser you take delivery of at a time, and how often you restock.
9,000L and 13,600L
- Smaller Operations
Suited to smaller-scale mixing needs, or properties taking smaller, more frequent deliveries.
22,500L and 31,700L
- Mid-Range Operations
Mid-range capacities for operations wanting more buffer between deliveries without moving to the largest tank in the range.
50,000L
- Large-Scale Bulk Storage
The largest tank in the range, suited to large-scale operations taking full bulk tanker deliveries.
Highest Quality and Standards
One-Piece, Self-Supporting Construction
Manufactured in one piece with no joins, seams, or part lines. The self-supporting roof design means no internal support poles are needed.
Extra Thick Walls
Built with extra thick walls for maximum strength, to handle bulk liquid fertiliser loads up to 50,000L.
Double Strength UV+ Resin
Double strength UV+ resin protects the tank from the harsh Australian sun.
Australian Made
Manufactured in Australia, built for Australian farm conditions.
THE RANGE IN THE FIELD
Bulk Fertiliser Storage on Farm
MORE LIQUID FERTILISER SOLUTIONS FROM POLYMASTER
Explore Our Full Range of Liquid Fertiliser Storage
A flat bottom tank covers your bulk holding volume, but it is rarely the only thing on a fertiliser setup. Depending on how you store, mix, and apply product, one of these will usually sit alongside it.
Self-Draining Liquid Fertiliser Tanks
The same on-farm storage, built on a cone or sloped base so the tank empties out fully rather than leaving residue in the bottom. Worth stepping up to when you are rotating products, managing settling-prone blends, or need the tank clean between fills.
Learn More
Fertigation Tanks
Purpose-built for injecting liquid fertiliser into an irrigation system, rather than holding it in bulk. Where a flat bottom tank is your reservoir, a fertigation setup is what meters product out to the crop at the right rate.
Learn More
Liquid Fertiliser Tank Accessories
Pumps, camlocks, and top fill kits sized to suit flat bottom tanks. The parts that turn a static storage tank into a working fill-and-draw setup on site.
Learn More
DELIVERY
Delivery Across Australia
Polymaster delivers flat bottom liquid fertiliser tanks to farms across Victoria, South Australia, New South Wales, and Queensland. Extra freight charges may apply for delivery outside normal delivery zones.
Can't Find the Tank You Are Looking For?
Talk to our team. We will help you match the right flat bottom liquid fertiliser tank capacity to your on-farm storage and delivery needs.
FAQs
Frequently Asked Questions
What is the difference between a flat bottom and a self-draining liquid fertiliser tank?
A flat bottom tank is built for bulk storage, holding your mixed fertiliser until you need it. A self-draining tank is built to empty completely between fills, which matters if you are running more than one fertiliser mix through the same tank. If you only ever store one mix at a time, a flat bottom tank is the simpler option.
What material are flat bottom liquid fertiliser tanks made from?
Every tank in the range is manufactured in Australia from heavy-duty polyethylene, built in one piece with no joins, seams, or part lines, and rated to hold liquids up to 1.4 specific gravity.
Can I get a custom size flat bottom liquid fertiliser tank?
The standard range runs from 9,000L to 50,000L across 5 capacities. If you need something outside this range, contact our team to discuss your requirements.
Are there regulations for storing liquid fertiliser on an Australian farm?
Requirements depend on the specific product and its classification on the Safety Data Sheet, and can vary by state. Storage and handling of agricultural chemicals in Australia is generally covered by AS 2507, and bulk storage of hazardous chemicals commonly requires spill containment or bunding under state WHS and EPA rules. This flat bottom range does not include a bund. If your site or product classification requires one, check with your state regulator or see Polymaster’s self-bunded tank range.