Fuel Problems? Treat the cause, not the symptom! ALGAE-X Magnetic Fuel Conditioners eliminate clogged and slimy filters, dark, hazy fuel, sludge build up in tanks, loss of power and RPM, excess smoke, corroded, pitted injectors, and foul odor. LGX-500 sized for 1/2" port size, up to 90 GPH flow, and engines rated at up to 500 HP.