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'Rum'-pumped crab

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Killing 'rum'-pumped crabs
By having the surgeons trapped in the other room, you can easily deal with the crabs.

'Rum'-pumped crabs are dangerous and aggressive, mutated crustaceans found in the 'Rum'geon on Braindeath Island. They have been injected by Captain Donnie's general malpractitioners in order to create an army. They are the only monsters that drop the brackish blade.

In order to access the dungeon, the quest A Clockwork Syringe needs to be partially completed and the player must have a Fishbowl helmet and Diving apparatus equipped, otherwise they will not be allowed to enter.

'Rum'-pumped crabs use only melee with a maximum hit of around 120. They will constantly be considered aggressive towards anyone within the 'Rum'geon. They will take increased damage from the brackish blade that they drop, as well as the Brine sabre.

It should be noted that a brine sabre hits more often and with better damage using the controlled stab style, than Korasi's sword on controlled stab. There is a safespot from General malpractitioners in the room east of the dungeon entrance. This will help save inventory spots for prayer potions normally taken up by food and antipoisons. It is easy to kill over 100 crabs on one inventory of prayer potions. If your goal is to attain the brackish blade via drop, fill inventory with 1 antipoison (in case you get poisoned by the malpractitioners on your way to safe spot), 3 tunas, swordfish, monkfish, or shark for emergency food, and 17-21 prayer potions (4).

Players may find it more profitable to bring along High Alchemy runes, as the Rune claws drops can more often than not be alched for more than they could be sold for on the Grand Exchange. Also, it is possible to gather upwards of 100K gold coins per trip just by picking up the regular coin drops as well as alchemising. Another way to increase your profit for each trip is to bring a gem bag, a reward from the dungeoneering skill and bought by tokens, to keep all gem drops without using inventory space.

Protect from Melee is advised, as multiple crabs will attack the player. On occasion, nearby level 65 general malpractitioners may throw a syringe at a crab and temporarily increase its attack speed, up to a maximum of 8. The malpractitioners will also attack the player with poisonous ranged attacks, so Antipoison potions or an Anti-poison totem will come in handy. Additionally, these monsters are weak to stab attacks.

'Rum'-pumped crabs also have a high blue charm drop rate, for those who would like to effectively collect them whilst gaining considerable combat experience (about 150K+ per trip with optimal gear, stats, and inventory. This is excluding Constitution experience).

Another strategy is to bring a good melee defensive set such as Barrows equipment and lure the general malpractitioners out of one of the rooms and close the door after them, this way you will avoid being ranged by the malpractitioners and can either choose to pray melee to avoid receiving damage from the 'rum'-pumped crabs or you can choose to use the Ancient Curse, Soul Split, whenever you get low on life points. It is noteworthy that the crabs drops several cooked lobsters which can also be used for healing up the life points lost. With this method a trip would last until you run out of prayer potions.

Contents

HabitatEdit

DropsEdit

100% DropsEdit

  Item Quantity Rarity GE Market Price
Bones Bones 1 1 Always 85

CharmsEdit

Charm drop percentages
No charms Gold charm Green charm Crimson charm Blue charm

89–91%

2–3%

1–2%

2–3%

4–5%

Represents 90% confidence range, based on a sample of 2,401 kills.
1 charm is dropped at a time.

Please add to the log (only if 50 or more creatures killed).


Weapons and armourEdit

  Item Quantity Rarity GE Market Price
Rune claw Rune claw 1 3 Uncommon 6,719
Brackish blade Brackish blade 1 4 Rare 61,398

PotionsEdit

  Item Quantity Rarity GE Market Price
Fishing potion (4) Fishing potion (4) 2 (noted) 2 Common 158
Super attack (1) Super attack (1) 1 2 Common 105
Super strength (1) Super strength (1) 1 2 Common 292
Super defence (1) Super defence (1) 1 3 Uncommon 39
Ranging potion (2) Ranging potion (2) 1 4 Rare 800

HerbsEdit

  Item Quantity Rarity GE Market Price
Grimy guam Grimy guam 1 2 Common 361
Grimy marrentill Grimy marrentill 1 2 Common 56
Grimy tarromin Grimy tarromin 1 2 Common 168
Grimy harralander Grimy harralander 1 2 Common 463
Grimy ranarr Grimy ranarr 1 2 Common 2,244
Grimy irit Grimy irit 1 2 Common 1,863
Grimy kwuarm Grimy kwuarm 1 3 Uncommon 2,183
Grimy avantoe Grimy avantoe 1 3 Uncommon 3,940
Grimy cadantine Grimy cadantine 1 3 Uncommon 2,156
Grimy lantadyme Grimy lantadyme 1 3 Uncommon 7,886
Grimy dwarf weed Grimy dwarf weed 1 3 Uncommon 9,087

SeedsEdit

  Item Quantity Rarity GE Market Price
Potato seed 5 Potato seed 1–3 2 Common 2–6
Onion seed 5 Onion seed 1–3 2 Common 3–9
Cabbage seed 5 Cabbage seed 1–3 2 Common 4–12
Tomato seed 5 Tomato seed 1–3 2 Common 2–6
Strawberry seed 5 Strawberry seed 1–3 2 Common 434–1,302
Watermelon seed 5 Watermelon seed 1–3 3 Uncommon 1,953–5,859
Evil turnip seed 5 Evil turnip seed 1–4 3 Uncommon 183–732
Sweetcorn seed 5 Sweetcorn seed 1–3 3 Uncommon 4–12
Morchella mushroom spore 5 Morchella mushroom spore 2 3 Uncommon 524

OtherEdit

  Item Quantity Rarity GE Market Price
Coins 250 Coins 342–1,671 2 Common Not sold
Lobster Lobster 1 2 Common 87
Raw lobster Raw lobster 1–3 2 Common 124–372
Spin ticket Spin ticket 1 4 Rare Not sold
Gold ore Gold ore 2 (noted) 2 Common 806
Fire talisman Fire talisman 1 4 Rare 2,016
Ancient effigy Ancient effigy 1 5 Very rare Not sold

Rare drop table dropsEdit

This monster drops items from the rare drop table.
The ring of wealth improves the chances if equipped but is not required to access the table.

TriviaEdit

  • Before the Evolution of Combat when the special attack of the Brine Sabre and Brackish Blade was used on a 'Rum'-pumped crab the message "The Brine Sabre/Brackish Blade seems super-effective." appeared. This may have been a reference to Pokémon where a player would see "It's super effective!" when a Pokémon was hit by an attack that it was weak to.


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