Premium quality Swim Stim Pro-Expanders are designed to be pumped or left to soak in water, to create the perfect sinking soft hook or feed pellet.

The same unique Koi technology promotes an aggressive feed response, setting them apart from other pellets on the market.

Spongy, robust texture ensures they remain firm once soaked/pumped.

• Tough & durable expander pellets
• Boosted with premium koi attractants
• Pump or soak to prepare