Prospecting Sluice Upgrades: Empowering, Starblossom & Pharaohs

Choosing the right Prospecting sluice upgrades reshapes how efficiently a dig session turns into profit, and three late-game variants — the Empowering Sluice, the Starblossom Sluice and the Pharaohs Sluice — sit at the top of that decision tree. Each one ties to a specific purchase condition, a specific location, and a specific mineral profile, so skipping the planning step usually means wasted inventory runs.

This guide walks through the full upgrade ladder, breaks down where every sluice lives inside the Crystal Caverns and its connected tunnels, and lays out the order in which to chase them. Players who treat sluice progression as a separate goal from shovel upgrades tend to earn back their investment noticeably faster, because the late-game sluices also unlock rare drop tiers that basic pans simply cannot reach.

Understanding the Sluice Upgrade Ladder

Sluices in Prospecting operate as a second-stage washing tool that complements the pan you carry on your main tool slot. Where pans strip loose sediment down to common gold, sluices process a larger volume per cycle and retain heavier chunks — gemstones, fossils, and the rare ores that sell for a serious markup. Every Prospecting sluice upgrade pushes that retention rate up while reducing the percentage of valuable material lost to overflow.

The base Wooden Sluice is given to new players during the tutorial and is meant to be replaced quickly. It is fine for the first few hours on the Mainland river, but its retention rate and processing speed are tuned so that every downstream upgrade feels like a meaningful step. The community generally agrees that holding on to the Wooden Sluice past the first major dig site is a noticeable drag on per-hour yield, because the Crystal Caverns already starts dropping heavier material on the first visit.

Sluice Tier Comparison

The base Wooden Sluice is given to new players during the tutorial and is meant to be replaced quickly, so any player serious about mid-game income should plan to swap it out before the Crystal Caverns become the primary grinding zone. Players who want a deeper picture of how those caverns feed into the sluice economy can cross-reference the Crystal Caverns Guide alongside this guide.

The Empowering Sluice: First Real Upgrade

The Empowering Sluice is the first meaningful tier on the upgrade ladder, and most players chase it before anything else in the Crystal Caverns. It costs a serious amount of in-game currency, but the payoff is twofold: the processing speed is roughly double the Iron Sluice, and its retention rate for energized shards and rune fragments is high enough to make rune farming a real side income.

Empowering Sluice Snapshot

Players report that reaching the Empowering Sluice vendor requires walking through the entrance tunnel of the Crystal Caverns and following the lit path past the first crystal node. The vendor NPC sits just beyond the second mining alcove, which is also where the first Overgrown Grotto shortcut is located. According to community data, this vendor is one of three sluice vendors reachable in a single trip, so efficient players usually clear the full loop in one session.

The Empowering Sluice is also a prerequisite for several rune-focused objectives, because energized shards are consumed when crafting or upgrading runes. Skipping this sluice in favor of jumping straight to Starblossom or Pharaohs tends to leave the rune economy stalling, since the lower-tier sluices lose too many shards to overflow to make crafting cost-effective.

The Starblossom Sluice: Floral and Fossil Specialist

The Starblossom Sluice is positioned as the floral and fossil specialist of the late-game roster. Its retention rate for crystallized flora, amber-preserved fossils, and a handful of cosmetic drops is the highest in the game, which is why it is the sluice of choice for players building a fossil collection or chasing the museum completion objectives.

Starblossom Sluice Snapshot

The Starblossom Sluice lives on a vendor tucked into a tunnel off the main Crystal Caverns chamber. The path branches past the Empowering Sluice vendor and continues toward the Overgrown Grotto entrance, but players need to take the side tunnel roughly halfway between those two points. According to community testing, the side tunnel is marked by a faintly glowing flower cluster, which makes the navigation easier than it sounds.

The Starblossom Sluice pairs naturally with the Overgrown Grotto, because the grotto is a major source of the crystallized flora that the sluice is built to retain. Players who already cleared the Crystal Caverns entrance and have access to the Overgrown Grotto shortcut should treat the Starblossom Sluice as the natural second purchase after the Empowering Sluice, since both vendors sit on the same route.

The Pharaohs Sluice: Relic and Ancient Material Tier

The Pharaohs Sluice sits at the relic end of the late-game spectrum. Where the Starblossom Sluice chases floral and fossil material, the Pharaohs Sluice is built to retain ancient relics, gold-bearing sandstone, and the rare ore clusters that only appear in the deeper sections of the Crystal Caverns. Players chasing the Pharaohs-themed collection achievements or the relic merchant's premium prices usually make this their third major purchase.

Pharaohs Sluice Snapshot

Finding the prospecting sluice upgrade location for the Pharaohs Sluice means traveling deeper than the other two vendors. The path continues past the Starblossom side tunnel, descends through a short crystal staircase, and opens into a wider chamber lit by a different crystal color. According to community data, the Pharaohs Sluice vendor is the third NPC on the caverns loop, and the chamber also contains the entrance shortcut that players unlock after purchasing the sluice for the first time.

The Pharaohs Sluice is widely considered the best single purchase for players who intend to grind the relic merchant, because its relic retention rate is noticeably higher than the Starblossom variant. Community testing suggests that the difference is roughly 15 to 20 percent per cycle, which compounds quickly across a long farming session.

Recommended Upgrade Order and Strategy

The upgrade order matters more than the specific sluice chosen first, because the early unlocks feed directly into the income that funds the later purchases. Most experienced players follow the same three-step ladder, even if their personal priorities differ.

Step-by-Step Upgrade Plan

Players who want to optimize the rotation should treat each sluice as a session-specific tool rather than a permanent fixture. Running the Empowering Sluice for an hour, then switching to the Starblossom Sluice for the Overgrown Grotto, then closing the session on the Pharaohs Sluice in the deep chamber, is a common pattern reported by experienced players. The same pattern is also visible in community videos like this one from BigFish and this self-propulsion build clip from GamesAndSim, where creators rotate sluices based on the dig site of the moment.

One practical tip is to keep at least one backup sluice in storage at all times, because some of the more expensive vendors will occasionally roll limited-time discounts. Holding the previous tier instead of selling it back keeps the option open to re-equip if a discount window opens unexpectedly.

Rotwood Swamp and the Corroded Sluice

For players who plan to push past the Crystal Caverns entirely, the Rotwood Swamp introduces a sixth option that is worth tracking even if it is not part of the main upgrade ladder. The swamp has its own sluice vendor, the Corroded Sluice, which is built specifically for the toxic minerals that the swamp drops. The pricing is extreme — community sources place it at around 500,000,000,000 in-game currency, which is roughly an order of magnitude above the Pharaohs Sluice — so it is firmly an endgame chase.

Sluice Use-Case by Biomes

The Corroded Sluice is also gated behind the Purifying Ring requirement, because the swamp's environment damages players who do not have it equipped. According to the official Prospecting game page on Roblox, the swamp and its vendor are positioned as a long-term objective rather than a mid-game detour, which lines up with how the community discusses the upgrade ladder.

Practical Tips for Sluice Sessions

A few habits separate the players who make the sluice upgrades feel worth the cost from the ones who feel like the grind is dragging. Most of these habits are situational rather than mechanical, but they add up across long sessions.

• Match the sluice to the dig site before starting a session — switching mid-session resets some processing timers, which costs efficiency.

• Keep the Empowering Sluice equipped whenever the rune merchant is the next planned stop — the energized shard retention makes the trip noticeably more profitable.

• Buy the matching pan from the same vendor whenever possible — pan and sluice pairings produce a small bonus that the wiki does not always highlight clearly.

• Store the previous tier in a chest at the vendor hub — the discount windows that occasionally appear are easier to catch when the swap takes seconds instead of minutes.

• Run the deep Crystal Caverns chamber only with the Pharaohs Sluice — the relic density is too high to waste on a lower-tier tool, and the gap in retention is felt within a single cycle.

The wider lesson is that prospecting crystal caverns sluice progression is not a single purchase but a sequence, and treating it as a sequence is what unlocks the most value per hour.

For more strategies and details, explore our Sluices Guide.

Frequently Asked Questions

Where is the Prospecting sluice upgrade location for the Empowering Sluice?

The Empowering Sluice is sold by the vendor inside the main chamber of the Crystal Caverns, just past the second mining alcove. Players who already cleared the entrance tunnel should follow the lit path past the first crystal node until the vendor NPC is visible. According to community testing, this is the first of three sluice vendors on the same loop, so it pairs naturally with the Starblossom and Pharaohs purchases.

How much does the Starblossom Sluice cost in Prospecting?

The Starblossom Sluice is reported by community sources to sit in the very high cost tier, in the same general range as the Pharaohs Sluice. Exact pricing can vary with patches, so players should verify the current number on the vendor before farming. Saving past the Empowering Sluice purchase is usually enough to plan a Starblossom run within one or two sessions.

Is the Pharaohs Sluice worth buying before the Starblossom Sluice?

Most experienced players recommend buying the Starblossom Sluice first, because its floral and fossil retention feeds the grotto farming loop that funds the next purchase. Skipping straight to the Pharaohs Sluice is only optimal for players who already have the relic merchant unlocked and want to push that economy first. Otherwise, the Starblossom Sluice tends to pay for itself faster.

Can I use more than one sluice in a single dig session?

Yes, the tool slot allows the player to swap sluices freely, but each swap resets some processing timers. The community pattern is to pick a single sluice per dig site and stick with it for the whole session, then switch only when moving to a different biome. The most common rotation is Empowering → Starblossom → Pharaohs, ending the session in the deep chamber.

Do sluice upgrades affect rune farming in Prospecting?

The Empowering Sluice is the strongest sluice for rune-related materials, because its energized shard retention is high enough to make rune crafting cost-effective. Lower-tier sluices lose too many shards to overflow for the rune economy to scale, so the upgrade from Iron to Empowering is widely considered mandatory for serious rune farming.