Johnson Pump Aqua Jet WPS 4.0 GPM Water Pressure Pump - 24V Free shipping for all orders over $50.00. 30 days returns. Sign up for great deals with Fishbrain Pro. Share Loading Facebook Like button... Johnson Pump Aqua Jet WPS 4.0 GPM Water Pressure Pump - 24V Free shipping for all orders over $50.00. 30 days returns. Sign up for great deals with Fishbrain Pro. Share Loading Facebook Like button...