Ink Saver (Sub)

 is an ability in and. Firefin gear has a 5× chance of rolling this ability.

Description
decreases the ink usage of Sub Weapons. The revised ink usage of the Sub Weapon is indicated by the red arrow icon on the Ink Tank.

Splatoon 2
decreases the ink usage of sub weapons by up to 35%. Autobombs and Burst Bombs are an exception, only having their ink usage decreased by up to 30%.

Gear
is the main ability of:

Stacking
Stacking one main and five subs or more of will allow the player to throw two Curling Bombs, Splat Bombs, Suction Bombs, or Toxic Mists without having to refill the ink tank. Stacking seven subs or more will allow the player to throw three Burst Bombs without having to refill the ink tank. Stacking two mains and nine subs or more will allow the player to throw two Autobombs without having to refill the ink tank.

Stacking for most sub weapons:

Stacking for Autobombs and Burst Bombs:

Splatoon
decreases the ink usage of each sub weapon by up to 35%.

Use
The ability is great for sub weapons that consume a lot of the user's ink such as Seekers or Splash Walls. The ability allows the user to deploy such sub weapons more frequently, as less ink is used per sub weapon because of. With six sub slots of Ink Saver Sub, an extra Burst Bomb can be thrown before refilling ink. With one main slot and 5 sub slots, an extra Splat Bomb can be thrown.

Gear
is the main ability of:

Trivia

 * Prior to Version 2.6.0, players could only throw a single Splat Bomb or Suction Bomb, no matter how much was stacked. Update 2.6.0 changed this.