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Sonubaits Pro Expander Pellets F1 (500g)

£4.99

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Anglers Serving Anglers

Our entire team at Gerry’s are all experienced anglers and can help you choose the correct tackle for any fishing situation. Please drop us a message or give us a call if you need any help.

You can return unused standard items within 30 days for exchange or refund.

We check our prices weekly to ensure we can combine our fabulous service with the best prices. If you find an item cheaper and in stock somewhere else, drop us a a message in the chat box and we can see what we can do. 

This item is available for next day delivery. You can pick this in the checkout.

We offer free post to any mainland UK address with a basket of more than £80. We also send all over the world and the best way to find out how much postage you will pay is in our checkout. Add the items to your basket and then add your address. Our checkout will automatically calculate your total.

We have come from a tiny fishing store and grown into one of the biggest fishing tackle retailers in the UK winning countless awards over the years. We are still a family business offer fabulous service online and in-store.

Spread the cost of larger orders over 6 or 12 month 0% APR. We also offer longer terms with APR charges via V12 finance. Available in the checkout.

You can make your next purchase a little easier on the wallet by splitting the total into 3 payments by using Klarna payments in the checkout.

SKU – SON938772971

Product Details and Uses

Sonubaits Sweet F1 Pro Expander Pellets (500g)

Prepare to change the way you think about expander pellets. The Sonubaits Sweet F1 Pro Expander has taken the industry by storm by solving the two biggest headaches in match fishing: the need for a pellet pump and the frustration of “floaters.” These are unique sinking expanders that provide a perfect, sponge-like texture without any of the mechanical hassle.

For 2024, Sonubaits has leveled up the range by infusing these pellets with the legendary Sweet F1 flavor. This isn’t just a scent; it’s a high-attraction sweet additive that has been proven to trigger aggressive feeding in F1s, carp, and skimmers. If you want a hookbait that is easy to prepare, stays on the hook, and smells like a winner, the Sweet F1 Pro Expander is it.


Key Features & Benefits

  • No Pump Required: Simply soak these pellets in water, and they will naturally sink and expand to the perfect consistency. No more fumbling with pumps on the bank or in the kitchen.

  • Legendary Sweet F1 Flavor: Infused with the notorious F1 sweet attractor, making them a “killer” choice for commercial fisheries where fish have a sweet tooth.

  • Perfect Sinking Action: Every pellet in the bag is designed to sink, ensuring your bait stays on the deck and doesn’t drift away from your feed.

  • Durable & Hookable: Unlike traditional expanders that can be too “mushy,” Pro Expanders maintain a robust, rubbery texture that stays secure on the hook or a hair rig.

  • Consistent Quality: Every pellet expands to the same size and texture, providing a professional-grade presentation every time.


Technical Specifications

Feature Specification
Weight 500g Bag
Type Sinking Expander Pellets
Flavor Sweet F1
Preparation No Pump Needed (Simple Soak)
Target Species F1s, Carp, Skimmers, Bream
Available Sizes Typically 4mm, 6mm, and 8mm

How to Prepare Pro Expanders

The beauty of these pellets is the simplicity. To get the perfect hookbait:

  1. Place your required amount of pellets into a bait tub.

  2. Cover them completely with water (add a squirt of Sweet F1 Liquid for an extra boost!).

  3. Leave them to soak—usually 2 hours or, for the best results, overnight in the fridge.

  4. Drain the excess water, and you have perfect, sinking expanders ready for the session.


Where to Use Sweet F1 Pro Expanders

  • The Pole “Short” Line: Perfect for fishing over a bed of micros or groundbait. The soft texture is irresistible to F1s that might be wary of hard pellets.

  • Winter Match Fishing: When bites are hard to come by, the soft, “mushy” mouthfeel and sweet scent of an F1 expander can often trick a fish into holding on longer.

  • Waggler & Feeder: Because they are more durable than standard expanders, these can be carefully hair-rigged or hooked for use on a slow-sinking waggler or a light feeder setup.


Gerry’s Pro Tip

“At Gerry’s, we call these the ‘set and forget’ pellets. If you’re struggling to get your expanders right, just put a handful of these in a tub of water the night before your match and stick them in the fridge. By morning, they’ll be like little sponges. My top tip: don’t throw away the soaking water! It’s packed with F1 flavor and makes the perfect liquid for mixing your groundbait. If you’re targeting big F1s in the winter, the 4mm size is a absolute must-have.”


Frequently Asked Questions

Q: Do they really sink without a pump?

A: Yes! The manufacturing process ensures the air is already removed from the structure, allowing them to absorb water and sink naturally.

Q: Can I add extra color to them?

A: Absolutely. While they have a natural “washed-out” pellet color, they take on dyes incredibly well. If you want them vibrant yellow or red, just add some food coloring to the soaking water.

Q: How long will they stay ‘fresh’ once soaked?

A: If kept in a sealed tub in a cool place (or a cooler bag), they will stay in perfect condition for the entire day. If you have leftovers, they can often be kept in the fridge for 2–3 days.

Q: Can I freeze them?

A: You can, but we find they are at their best when used fresh. Freezing can sometimes slightly change the “springy” texture that makes them so effective.

Anglers Serving Anglers

Our entire team at Gerry’s are all experienced anglers and can help you choose the correct tackle for any fishing situation. Please drop us a message or give us a call if you need any help.

You can return unused standard items within 30 days for exchange or refund.

We check our prices weekly to ensure we can combine our fabulous service with the best prices. If you find an item cheaper and in stock somewhere else, drop us a a message in the chat box and we can see what we can do. 

This item is available for next day delivery. You can pick this in the checkout.

We offer free post to any mainland UK address with a basket of more than £80. We also send all over the world and the best way to find out how much postage you will pay is in our checkout. Add the items to your basket and then add your address. Our checkout will automatically calculate your total.

We have come from a tiny fishing store and grown into one of the biggest fishing tackle retailers in the UK winning countless awards over the years. We are still a family business offer fabulous service online and in-store.

Spread the cost of larger orders over 6 or 12 month 0% APR. We also offer longer terms with APR charges via V12 finance. Available in the checkout.

You can make your next purchase a little easier on the wallet by splitting the total into 3 payments by using Klarna payments in the checkout.

SKU – SON938772971

Chest Size Guide

Penn Chest Size Guide

Small (36″-37″)

Medium (38″-40″)

Large (42″-44″)

XLarge (46″-48″)

XXLarge (50″-52″)

Wader Waist Guide

Small (28″-30″)

Medium (30″-33″)

Large (34″-37″)

XLarge (37″-39″)

XXLarge (39″-42″)

3XLarge (42″-45″)

Kinetic/Westin Chest Size Guide

Small (36″-37″)

Medium (38″-40″)

Large (42″-44″)

XLarge (46″-48″)

XXLarge (50″-52″)

3XLarge (54″-56″)

Grundens Chest Size Guide

Small (36″-37″)

Medium (38″-40″)

Large (42″-44″)

XLarge (46″-48″)

XXLarge (50″-52″)

3XLarge (54″-56″)

Vass Chest Size Guide

Small (36″-38″)

Medium (38″-41″)

Large (42″-44″)

XLarge (45″-46″)

XXLarge (47″-48″)

3XLarge (49″-51″)

Trakker Chest Size Guide

Small (38-40″)

Medium (41-43″)

Large (44-46″)

Xlarge (47-49″)

XXLarge (50-52″)

XXXLarge (53-55″)

Korda Chest Size Guide

Small (36″-38″)

Medium (38″-41″)

Large (42″-44″)

XLarge (45″-46″)

XXLarge (47″-48″)

3XLarge (49″-51″)

Guy Cotten Chest Size Guide

Small (86 – 94cm)

Medium (94 – 102cm)

Large (102 – 110cm)

XLarge (110 – 124cm)

XXLarge (124 – 134cm)

3XLarge (134 – 154cm)

Fox Chest Size Guide

Small (36″-38″)

Medium (39″-41″)

Large (42″-44″)

XLarge (45″-47″)

XXLarge (48″-50″)

3XLarge (51″-54″)

4XLarge (55″-60″)

Nash Chest Size Guide

Small (36″-38″)

Medium (39″-41″)

Large (42″-44″)

XLarge (45″-47″)

XXLarge (48″-50″)

3XLarge (51″-54″)

4XLarge (55″-60″)

Aqua Chest Size Guide

Small (38-40″)

Medium (41-43″)

Large (44-46″)

Xlarge (47-49″)

XXLarge (50-52″)

XXXLarge (53-55″)

Guru Chest Size Guide

Small (36″-38″)

Medium (38″-41″)

Large (42″-44″)

XLarge (45″-46″)

XXLarge (47″-48″)

3XLarge (49″-51″)

Preston Chest Innovations Size Guide

Small (36″-38″)

Medium (38″-41″)

Large (42″-44″)

XLarge (45″-46″)

XXLarge (47″-48″)

3XLarge (49″-51″)

Trouser Waist Guide (Inches) 

Small – 28″ – 32″

Medium 32″ – 34″

Large – 34″ – 36″

X-Large 36″ – 38″

XX-Large – 38″ – 42″

XXX-Large 42″ – 46″

XXXX-Large 46″ – 52″