Bloontonium Reactor

"Activate submerge using target option to detect camo, pop bloons, and reduce water tower cooldowns 15% (doesn't stack)."

- Description from BTD 5 iOS is the fourth upgrade on path one for the Monkey Sub. It allows the sub to reveal camo, in the same way as search and support, but when submerged, it will also pop balloons with its camo revealer. As an added bonus, it reduces water tower ability cooldowns (First Strike Capability and Monkey Pirates ) by 15% if they are within its radius. It should be noted that while the cooldown bonus does not stack with other Bloontonium Reactors, it will still stack with high energy beacon and hotter cooldown.