Home » Water Cooling » Water Cooling Accessories » Coolant Additives Silver Coils - Antimicrobial .999 Fine Silver Strip $5.99 Nuke -Cu Concentrated Biocide (10mL) $3.25 Nuke -PHN Concentrated Biocide (10mL) $3.25 UV Reactive Pentosin G11 Coolant Additive (Blue) - 4oz. $4.50 Pentosin G12 Coolant Additive (Red - UV Reactive) - 4oz. $4.50 Long Life Red Coolant Additive - 4oz. $4.50 Swiftech HydrX Extreme Duty Coolant $2.99 PTS UV Neon Green Dye (10mL) $2.99 Feser View Active UV Dye (Black) 50mL $8.99 Feser View Active UV Dye (Blue) 50mL $8.99 Feser View Active UV Dye (Green) 50mL $8.99 Feser View Active UV Dye (Clear / Blue) 50mL $8.99 Feser View Active UV Dye (Purple) 50mL (Out of Stock) $8.99 Feser View Active UV Dye (Yellow) 50mL $8.99 Feser View Active UV Dye (Red) 50mL $8.99