Running out of carry capacity mid-dive is one of the most frustrating bottlenecks in Roblox's Abyss. The game tracks how much you can haul through two separate systems — a weight limit that governs how many fish you can physically carry on your person, and a portable stash that acts as a secondary bank you can access from anywhere. Increasing both early on saves enormous amounts of time and lets you push deeper without constantly surfacing to sell.
Quick answer: Equip a higher-tier tube to raise your weight cap, slot weight-boosting artifacts like the Ruined Lantern or Fish Crate, reroll into a weight-friendly race (Monkey, Narwhal, Crab, or Kraken), and pay Billy to expand your portable stash from 8 slots up to 40.
How Weight Works in Abyss
Your current carry weight is displayed in the bottom-left corner of the screen under the "Weight" label. Every fish and item you pick up adds to this number. As long as you stay under the cap, you move at normal speed. Exceed it, and your character slows to a crawl, making it dangerously hard to reach an oxygen source or safe zone before dying. Death costs you both money and some of the fish in your inventory, so managing weight is directly tied to survival.
You can open your backpack with G to shuffle items between your item bar and storage. Nothing changes your weight total by moving things around inside the backpack — the only way to reduce it is to sell, drop, or stash items.
Raising Your Weight Limit with Tubes
Tubes are the single biggest factor in determining how much you can carry. Each tube has a fixed weight capacity, and upgrading to a better one immediately raises your ceiling. If you're just starting out, head to David's tube stall in the Forgotten Deep and buy the best tube your budget allows. You can preview any tube's stats by pressing E while standing near it.
Higher-tier tubes found in later regions offer substantially more weight (and oxygen), so upgrading your tube should be a priority every time you unlock a new area. Notable options that players target for weight specifically include the Pufferfish Tube, Boat Tube, and Lost Spirit Tube, though the right choice depends on your current progression level and funds.
Boosting Weight with Artifacts
Artifacts provide passive stat bonuses, and several of them directly increase your weight capacity. You obtain artifacts by cracking geodes at the Virelia NPC. Once you have one, open your inventory, navigate to the artifacts tab, and equip the artifact that raises fish-carrying capacity.
The three strongest weight-boosting artifacts are the Ruined Lantern, Fish Crate, and Lantern. All three provide a significant bump to your maximum carry weight. Keep in mind that your primary storage stats shift whenever you swap tubes or artifacts — these bonuses are not permanent in the way stash upgrades are.
Choosing a Race That Increases Weight
Races in Abyss grant passive bonuses, and a handful of them improve how much fish weight you can carry at once. You reroll your race by spending star shards, which come from completing achievements or redeeming active codes. The reroll option sits at the top of your screen.
The best races for weight are Monkey, Narwhal, Crab, and Kraken. If maximizing carry capacity is your goal, keep rerolling until you land on one of these four. Because rerolls are random, stock up on star shards before you start.
Expanding the Portable Stash
While tubes, artifacts, and races all affect how much you can carry on your body, the portable stash is a completely separate storage pool. It starts at 8 slots and sits next to the Billy NPC, who leans against a blue storage box near the teleportation area. Your stash is private — no other player can view or loot it.
You expand the stash by paying Billy increasing amounts of in-game currency. The costs scale steeply with each tier:
| Upgrade | Cost |
|---|---|
| 8 → 16 slots | $1,250 |
| 16 → 24 slots | $4,750 |
| 24 → 32 slots | $15,000 |
| 32 → 40 slots | $50,000 |
Unlike tube and artifact bonuses, stash upgrades are permanent. Once you pay, the extra slots stay regardless of what gear you equip later. If you plan on long fishing sessions across multiple regions, maxing out the portable stash is one of the best investments you can make.
Robux Storage Option
There is also an Increased Storage purchase in the game's Robux shop that instantly adds storage capacity. This is a premium shortcut rather than an in-game progression path, but it's worth knowing about if you want to skip the grind.
Are Storage Upgrades Permanent?
The portable stash upgrades you buy from Billy are permanent. Your primary weight limit, however, fluctuates based on your currently equipped tube, artifacts, and race. Swapping to a lower-tier tube or unequipping a weight artifact will immediately reduce how much you can carry. Plan your loadout before diving so you don't get caught over the limit deep underwater.
Weight management in Abyss boils down to three parallel tracks: gear (tubes), passive bonuses (artifacts and races), and secondary storage (Billy's stash). Prioritize tube upgrades first since they have the largest single impact, layer in weight artifacts as you crack better geodes, and funnel spare cash into stash expansions whenever you can afford the next tier. With all three working together, you'll spend far less time surfacing and far more time fishing.
