Sluice box

Sluice box is the second cheapest building in the Get a Little Gold game. It should be researched before it appears in the buildings menu.

Description: Sluice box is more sophisticated way to recover gold from water

Base price: 60 gold

Base production: 0.5 gold per second

Building Research

Icon	Name	Unlocks at	Description	Initial cost	Cost per second	Base research time
	Sluice box	30 gold in bank	Unlocks Sluice box	60	1	1 minute

Production Researches

Icon	Name	Unlocks at	Description	Initial cost	Cost per second	Base research time
	Better sluicing 1	5 sluice boxes	Doubles sluice box production	600	8	1 min. 30 sec.
	Better sluicing 2	25 sluice boxes	Triples sluice box production	60000	270	4 min. 30 sec.
	Better sluicing 3	50 sluice boxes	Quadruples sluice box production	6 Million	8000	15 minutes
	Better sluicing 4	100 sluice boxes	Quintuples sluice box production	600 Million	27000	45 minutes
	Better sluicing 5	200 sluice boxes	Sextuples sluice box production	60 Billion	8 Million	2 hr. 30 min.
	Better sluicing 6	300 sluice boxes	Septuples sluice box production	6 Trillion	270 Million	7 hr. 30 min.

Note: Effects from production researches stack. For example if you complete Better sluicing 3 research, your total multiplier will be x24 (2 x 3 x 4).

Special Ability Researches

Icon	Name	Unlocks at	Description	Initial cost	Cost per second	Base research time
	Washing gold 1	15 sluice boxes	+1 to base sluice box production for every 20 sluice boxes owned	5400	90	3 minutes
	Washing gold 2	35 sluice boxes	+1 to base sluice box production for every 8 sluice boxes owned	4.86 Million	16200	15 minutes
	Washing gold 3	75 sluice boxes	+1 to base sluice box production for every 3 sluice boxes owned	8.7 Billion	5.8 Million	1 hr. 15 min.
	Washing gold 4	155 sluice boxes	+1 to base sluice box production for every sluice boxes owned	15 Trillion	2 Billion	6 hr. 15 min.
	Washing gold 5	315 sluice boxes	+4 to base sluice box production for every sluice boxes owned	40 Quadrillion	1 Trillion	1 day 7 hr. 15 min.

Washing gold bonus can be calculated using the following formula:

$\text {Washing gold bonus} ~ = ~ \text {Number of Sluice boxes} ~ \times ~ \text {Washing gold ratio}$

Washing gold ratio depends on the level of the washing gold special ability. It will be 0.05 on the first level of the washing gold because it increases production by 1 for every 20 sluice boxes owned. And it will be 4 at the fifth level of the washing gold because it increases production by 4 for every sluice box owned.

For example if you have 90 sluice boxes and completed Washing gold 3 research your washing gold bonus will be 30 (90 * 1/3).

Sluice Box Production Calculations

Initial sluice box production can be calculated using the following formula:

$\text {Sluice box production} ~ = ~ (\text {SBP} ~ + ~ \text {WGB}) ~ \times ~ \text {BSM}$

where SBP is Sluice box base production (0.5 gold per second)

WGB stands for Washing gold bonus. It depends on the number of Sluice boxes player currently have and the level of Washing gold special ability. For example if player owns 90 sluice boxes and completed Washing gold 3 research, his WGB will be 30 (90 * 1/3) as he receives +1 bonus to sluice box production for every 3 sluice boxes owned.

BSM stands for Better sluicing multiplier. It depends on the level of Better sluicing production research. For example if player completed Better sluicing 3 research, his BSM will be 24 (2 x 3 x 4).

So if you have 90 sluice boxes and completed researches Better sluicing 3 and Washing gold 3 your result Sluice box production will be (0.5 + 30) x 24 = 732 gold per second.

Sluice box production can be further boosted by tower starting from level 2 and rocker's special ability Bathing gold.

Pit's special ability Digging gold also take a part in Sluice box production as it increases base production of all buildings in game.

So the final formula will look like this:

$\text {Final sluice box production} ~ = ~ (\text {SBP} ~ + ~ \text {WGB}) ~ \times ~ \text {BSM} ~ \times ~ \text {TM} ~ \times ~ \text {BGM} ~ \times ~ \text {DGM}$

where TM is bonus from tower (increases sluice box base production starting from tower level 2)

BGM is Bathing gold multiplier (multiplier to sluice box base production from rocker's special ability)

and DGM stands for Digging gold multiplier (multiplier to all buildings base production from pit's special ability).