Acid Pool (BTD6)

For the upgrade in Bloons TD Battles 2, see Acid Pool (Battles 2).

Acid Pool

Every few attacks spills an acid pool on the track, and if no Bloons are nearby Alchemist can drench nearby track with acid.

Tower	Alchemist — Path 3 — Tier 2
XP cost	700
Cash cost	$385 — Easy $450 — Medium $485 — Hard $540 — Impoppable

← Faster Throwing

Lead to Gold →

Acid Pool is the Alchemist's path 3 tier 2 upgrade in Bloons TD 6. If the Alchemist has no targets within its range, the main attack will be used to drop an acid pool at a random location on the track, damaging Bloons that pass over it. Additionally, every fifth potion throw that targets a Bloon will now drop an acid pool where the potion landed, if its splashing pierce was not fully used up.

The pools deal 1 damage and have 5 pierce, and last for 6.95 seconds before expiring. They can damage any Bloon type except Glass, but cannot innately affect Camo Bloons, and also cannot hit the same Bloon twice. If the pool was spawned from a potion throw that targeted a Bloon, the pool cannot hit Bloons damaged by the same attack. Acid pools apply the same damage-over-time effect as the main potions, which by default deals 1 damage every 2 seconds and lasts for 4 seconds.

Stats

For a complete list of Alchemist stats, see Stats:Alchemist (BTD6).

This data was last updated for: version 55.1

Tower
Display range 45 units Footprint radius 6 units Targeting options First Last Close Strong

Attack
Cooldown 1.6s Offset (X, Y, Z) -2.73, 9.98, 7 Targeting Depends on targeting option Targeting range 45 units Filters Cannot target Camo
Ignores blockers
Acid Pool Pierce 5 Damage 1 Damage type Acid Lifespan 6.95s Radius 7 units Filters Cannot hit Camo Ignores blockers Damage over time Damage 1 Damage type Acid Duration 4.05s Interval 2s Layers ∞ Splash Pierce 15 Damage 1 Damage type Acid Lifespan 0.05s Radius 14 units Filters Cannot hit Camo Ignores blockers Damage over time Damage 1 Damage type Acid Duration 4.05s Interval 2s Layers ∞

1-0-2

Attack
Acid Pool Pierce 5 → 10 Radius 7 units → 10.5 units Splash Pierce 15 → 20 Radius 14 units → 21 units

2-0-2

Acidic Mixture Dip
Cooldown 8s Offset (X, Y, Z) 3.2, 10.7, 7 Targeting range 45 units
Ignores blockers
Buff Damage to Fortified Lead bonus +1 Damage to Ceramic bonus +1 Damage to MOAB-Class bonus +1 Charges 10

0-1-2

Attack
Acid Pool Damage over time Duration 4.05s → 4.55s Interval 2s → 1.5s Splash Damage over time Duration 4.05s → 4.55s Interval 2s → 1.5s

0-2-2

Attack
Acid Pool Damage to MOAB-Class +4 Damage to Fortified MOAB-Class +15 Removes Fortified Splash Damage to MOAB-Class +4 Damage to Fortified MOAB-Class +15 Removes Fortified

Costs and sell values

Note: this list does not factor in Monkey Knowledge or other discounts.

Tiers	Total cost				Sell value
	Easy	Medium	Hard	Impoppable	Easy	Medium	Hard	Impoppable
0-0-2	$1,410	$1,650	$1,780	$1,980	$987	$1,155	$1,246	$1,386
1-0-2	$1,620	$1,900	$2,050	$2,280	$1,134	$1,330	$1,435	$1,596
2-0-2	$1,920	$2,250	$2,430	$2,700	$1,344	$1,575	$1,701	$1,890
3-0-2	$3,110	$3,650	$3,940	$4,380	$2,177	$2,555	$2,758	$3,066
4-0-2	$5,535	$6,500	$7,020	$7,800	$3,875	$4,550	$4,914	$5,460
5-0-2	$46,335	$54,500	$58,860	$65,400	$32,435	$38,150	$41,202	$45,780
0-1-2	$1,620	$1,900	$2,050	$2,280	$1,134	$1,330	$1,435	$1,596
0-2-2	$2,025	$2,375	$2,565	$2,850	$1,418	$1,663	$1,796	$1,995
0-3-2	$4,405	$5,175	$5,590	$6,210	$3,084	$3,623	$3,913	$4,347
0-4-2	$7,975	$9,375	$10,125	$11,250	$5,583	$6,563	$7,088	$7,875
0-5-2	$46,225	$54,375	$58,725	$65,250	$32,358	$38,063	$41,108	$45,675

Strategy

This section was last updated for: version 56.3

The Acid Pool upgrade attempts to make Alchemist function as a more consistent offensive tower, but its weak power and lack of synergy to build off of make the upgrade almost useless. Even with several pools built up in a row, the same 5 Bloons will likely trigger all of them (or even less than 5, as e.g. two or three Black Bloons and their children can use up most of the pierce), severely limiting the acid pools' ability to spread the potion debuff. This upgrade provides no benefits for top or middle path Alchemists, except for Unstable Concoction, and lacks synergy or is even anti-synergistic with the rest of the bottom path. The added damage from pools can reduce the income gained through Rubber to Gold (especially if paired with Bloon Trap), which is why some players avoid Acid Stability.

Acid Pools have a niche use in damaging the R40 Alternate Bloons Rounds Fortified MOAB with a 0-2-2 crosspath, dealing 20 damage per attack and pool for a cheap cost. However, it is not strong enough to pop the layer by itself, and the MOAB Mauler for a lower cost is more consistent on maps with good coverage.

Update history

For a complete list of Alchemist changes, see Update history:Alchemist (BTD6).

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Version 2.0

•  Main attack: Now places an acid pool where the potion lands if it does not hit its target

Version 21.0

“

Follow up steps in overall balancing use of the 420 and 402 alchemist upgrades, this brings both combinations more in-line for total cost and allows us to think about Acid Pools as its own upgrade in future rather than worrying about the impact of changing 402.
— Update notes

”

•  Upgrade cost reduced ― $600 → $450
  •  Overall cost is unchanged (due to cost changes for previous tiers)
•  Acid Pools and Faster Throwing upgrades have swapped places on the upgrade path

Version 27.0

3-0-2, 4-0-2, 5-0-2

•  Faster Throwing crosspath once again increases the rate of the Brew attack (bug fix)

Version 31.2

•  Base potion attack: no longer has single-layer damage (undocumented)

Version 33.0

“

Transforming Tonic has always had a large struggle with pierce, rather than directly throwing onto the base pierce we have added crosspathing pierce & rate benefits for transformation enjoyers to now choose between.
— Update notes

”

0-4-2, 0-5-2

•  Ability main attack: Attack cooldown reduced ― 0.03s → 0.024s (attack speed increased by 25%)

Version 41.0

“

Acid Pools only adds anything to the tower when there are no Bloons around, so we’re making it a hybrid that benefits somewhat from this upgrade even while attacking normally.
— Update notes

”

•  Main attack: Every 5th shot now also places an Acid Pool under the target Bloon

Version 41.1

•  Alchemist pools last the correct duration (bug fix)
  • Note: Doesn't affect the acid pools that are spawned every 5th potion

Gallery

For more Alchemist images, see Gallery:Alchemist.

Screenshots

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Assets

• 
  Portrait
• 
  Upgrade icon
• 
  Insta Monkey icon

In other languages

Language	Name / Description	Notes
Arabic	تجمع حمضي تؤدي كل بضع هجمات إلى سكب تجمع حمضي على المسار، وإذا لم يكن هناك بالونات قريبة، فيمكن للقرد الكيميائي أن يغمر المسار القريب بالحمض.	—
Danish	Syrebad Vil i nogle angreb spilde syre på vejen, og hvis der ingen bloons er i nærheden, kan alkymisten hælde syre på den nærliggende vej.	—
German	Säurepool Alle paar Angriffe tropft ein Säurepool auf die Strecke, und wenn keine Bloons in der Nähe sind, kann der Alchemist die Strecke nebenan mit Säure tränken.	—
Spanish	Charco de ácido Cada pocos ataques se derrama un charco de ácido en la pista y, si no hay bloons cerca, el alquimista puede empapar la pista cercana con ácido.	—
Spanish (LA)	Charco de ácido Arroja un charco de ácido sobre el camino y si no hay bloons cerca, el alquimista baña el camino cercano con ácido.	—
Finnish	Happoallas Muutaman hyökkäyksen välein radalle valuu happolammikko, ja jos lähellä ei ole blooneja, alkemisti voi kastella läheisen radan hapolla.	—
French	Flaque d'acide Toutes les quelques attaques, une flaque d’acide est déversée sur le circuit, et si aucun Bloon ne se trouve à proximité, l’alchimiste peut inonder le circuit avoisinant avec de l’acide.	—
Italian	Pozza di acido Dopo qualche attacco, sparge una pozza di acido sul tracciato e se non vi sono bloon nelle vicinanze, l'alchimista può inondare il tracciato vicino di acido.	—
Japanese	酸性プール 攻撃数回ごとにルート上に酸の水溜りをこぼし、近くにブルーンがいない場合、錬金術師は近くのトラックを酸で満たすことができる。	—
Korean	산성물질 웅덩이 공격이 일정 횟수마다 트랙에 산성물질을 쏟아 웅덩이를 생성하고, 연금술사 주변에 풍선이 없으면 주변의 트랙을 산성물질로 흠뻑 적실 수 있습니다.	—
Dutch	Zuurplas Na elke paar aanvallen komt er een zuurplas op het pad. Als er geen Bloons in de buurt zijn, kan de Alchemist het pad in de buurt met zuur overspoelen.	—
Norwegian	Syrebasseng Et og annet angrep heller et syrebasseng på banen, og hvis ingen bloons er i nærheten, kan Alkymister helle syre over banen.	—
Polish	Kałuża z kwasem Co kilka ataków rozlewa kałużę z kwasem na torze, a jeśli w pobliżu nie ma żadnych blonów, alchemik może zalać pobliską ścieżkę kwasem.	—
Portuguese (Brazil)	Poço de Ácido A cada poucos ataques, derrama um ácido na pista e, se não tiver Bloons por perto, o Alquimista pode encharcar a pista próxima de ácido.	—
Russian	Кислотное озеро Каждые несколько атак разливает на трассе кислоту, и, если рядом нет шаров, алхимик может залить кислотой ближайшую трассу.	—
Swedish	Syrabassäng En pöl med syra spills ut på vägen efter några attacker, och om inga Bloons är i närheten kan Alkemisten dränka en väg i närheten med syra.	—
Thai	แอ่งน้ำกรด ทุกการโจมตีสองสามครั้งจะมีการพ่นแอ่งน้ำกรดลงบนเส้นทาง และถ้าไม่มีบลูนใกล้ ๆ นักเล่นแร่แปรธาตุอาจจะทำให้เส้นทางใกล้ ๆ เปียกชุ่มด้วยกรดได้	—
Turkish	Asit Havuzu Her birkaç saldırıda parkura asit birikintisi dökülür ve yakında hiç Bloon yoksa Simyacı yakındaki parkuru asitle ıslatabilir.	—
Chinese (simplified)	酸池 炼金术士每攻击几次，就会在路径上洒下一滩酸液，如果附近没有气球，炼金术士可以用酸将附近的道路浸透。	—
Chinese (traditional)	酸液池 攻擊數次後會在路徑上灑下酸液池，如果附近沒有氣球，則煉金術士會用酸液來覆蓋附近的路徑。	—
This list was last updated for: version 43.1