Home » Water Cooling » Water Cooling Accessories » Coolant Additives Silver KillCoils by iandh $8.75 Petra'sTech PT_Nuke Concentrated Biocide (10mL) (Out of Stock) $2.50 Petra'sTech PT_Nuke -PHN Concentrated Biocide (10mL) $2.50 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. (Out of Stock) $4.50 Swiftech HydrX Extreme Duty Coolant $2.99 Petra'sTech UV Blue/Clear Dye (10mL) (Out of Stock) $2.99 Petra'sTech UV Neon Green Dye (10mL) $2.99 Petra'sTech UV Red 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 $8.99 Feser View Active UV Dye (Yellow) 50mL $8.99 Feser View Active UV Dye (Red) 50mL $8.99