Activate submerge using target option to detect camo, pop bloons, and reduce water tower cooldowns 15% (doesn't stack).
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~ Description from BTD5 Mobile
Bloontonium Reactor (sometimes shortened to Reactor or Reactor Sub) is the fourth upgrade on path one for the Monkey Sub in BTD5. It allows the sub to reveal Camo Bloons, in the same way as Submerge and Support, but when submerged, it will also pop bloons within its radius, including Lead Bloons. As a bonus, it reduces water tower ability cooldowns ((BTD5) 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 (85% total if hotter cooldown is fully upgraded, or 65% total on BTD5 Flash with the premium upgrade).
A large amount of popping power that also acts as support.
Tips[]
Except in BTDB Mobile, crosspaths have no impact on the pulse rate.
A submerged Bloontonium Reactor acts like a Ring of Fire, but it is used on water and it has a decamo, as well as reducing the cooldown of nearby water towers.
In BTD5 Flash, multiple Bloontonium Reactors placed close to each other can stack their popping power, and 2 to 3 of them can stop even a full RegrowCeramic if placed precisely.
In Mobile, Bloontonium Reactors popping power does not stack.
Bloontonium Reactor now automatically switches the tower into submerged mode upon purchase.
5.0
Fixed a bug where Bloontonium Reactor's water tower cooldown decrease stacked with any other Reactor in range
Gallery[]
Bloontonium Reactor artwork from BTD5 Mobile
BTD5 Flash Bloontonium Reactor artwork
Bloontonium Reactor artwork from BMC Mobile
Monkey Sub with Bloontonium Reactor
Unsubmerged Flash version
Submerged Sub with radar and pulse
Unsubmerged sub releasing a dart
Submerged Bloontonium Reactor with pulse only
BTDB Mobile Reactor with faster pulses, depicted with more radars
Trivia[]
In BTD5, this is one of the few upgrades that has infinite popping power.
In BTD6 it has been nerfed to only pop up to 50 bloons per pulse (or 30 before Version 2.0, or 70 between Version 2.0 and before the Version 23.0 update).
In BTD5-era games, although the description says that the cooldown reduction does not stack, it actually does stack with multiple subs, which can further decrease the ability cooldowns. Thus, using at least seven of these will fully cancel the ability cooldown, allowing for hypersonic abilities. In BMC Mobile, this exploit is incredibly useful for reaching high rounds in Contested Territory if the current map is set on Lake or River Terrain and First Strike Capability is used, allowing the player to take out even strong Z.O.M.G.s very quickly and easily. The same thing is true when fighting Bloonarius.
This was fixed in BTD Battles Mobile, preventing the ability cooldown reductions from stacking.