£4.99
In stock
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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.
Give your swim a high-impact visual edge with Sonubaits Fluoro Rocks XL. Sometimes, flavor alone isn’t enough to pull fish in from a distance—you need a “pop” of color to grab their attention. These brand-new additions to the Sonubaits range are designed to be mixed through your groundbait or pellets, creating a vibrant landing zone that ensures your feeder stands out against the lakebed.
At Gerry’s Fishing, we know that skimmers, bream, and F1s are highly inquisitive. Fluoro Rocks provide a “trail of crumbs” effect that leads fish directly to your hookbait. Unlike some additives that bleed out quickly, these are non-leaking rocks, meaning they retain their neon vibrancy for the duration of your cast, even in deep or murky water.
Tri-Colour Mix: Each tub contains a potent blend of fluoro pink, orange, and yellow rocks for maximum contrast on any bottom.
F1 Flavour Infusion: These aren’t just plastic—they are flavoured with the world-famous, sweet, and creamy Sonubaits F1 flavour for an extra hit of olfactory attraction.
Non-Leaking Technology: Engineered to stay bright in the water without losing their colour, providing long-lasting visual appeal.
Versatile Texture: The “rock” consistency adds a unique physical element to your mix, mimicking small particles of high-value food.
Generous XL Tub: The 140g size provides enough visual “boosters” for multiple sessions, whether you’re feeding heavily or just adding a pinch to each cast.
| Feature | Details |
| Weight | 140g Resealable Tub |
| Colours Included | Fluoro Pink, Orange, and Yellow Mix |
| Flavour | Signature Sonubaits F1 (Sweet/Creamy) |
| Durability | Non-leaking / High-Visibility |
| Target Species | Skimmers, Bream, Carp, and F1s |
| Best Used With | Groundbaits, Micro Pellets, and Expander Pellets |
Traditional Cage Feeder: Mix a handful into your groundbait for skimmers and bream on natural venues. The bright flecks help fish lock onto your feeder in silty or dark-bottomed lakes.
The Method Feeder: Press a few rocks into the top of your Method mould before casting. It creates a “bullseye” effect right next to your hookbait.
Margin Pole Fishing: Sprinkle a few rocks into your pot alongside your loose-fed pellets to create a visual “dinner plate” that big carp can’t miss in the margins.
Pellet Feeder: Mix them in with your micros to break up the monotonous brown/green colour of standard pellets, triggering a competitive feeding response.
Pro Tip from the Gerry’s Team
For the best results, add your Fluoro Rocks to your groundbait after you have finished mixing and sieving. This ensures they remain clean and vibrant on the outside, providing the sharpest possible visual contrast when they hit the bottom. If you’re fishing for F1s in the winter, just a tiny pinch (3-4 rocks) in the feeder is often enough to trigger a bite when the fish are feeding cautiously!
Do these rocks dissolve over time?
No, they are designed to be hard-wearing and stay intact on the bottom. This ensures that even if you leave a feeder out for a longer period (e.g., when bream fishing), the visual attraction remains 100% effective.
Can I use these with expander pellets?
Absolutely. Adding a few Fluoro Rocks to your expander tub gives the fish something bright to home in on while they are vacuuming up your soft hookbaits.
Is the F1 flavour strong?
The rocks are “washed” in the F1 flavour, providing a subtle but consistent scent trail. It perfectly complements other F1-flavoured products in the Sonubaits range, like the F1 Groundbait or F1 Corn.
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.




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″