Read Upgrade Tank for your current display
Open Upgrade Tank at your aquarium and inspect the offer for the tank you have now. Surf And Rescue tank upgrades develop the display, while Add to Tank places a clean pet and Edit Tank opens its pet-card menu. Choose the structural control only when expansion is your task.
The introduction includes an Upgrade your Tank! instruction and a FREE offer. Later panels show currency prices. Read each current panel for its price; the tutorial’s free option applies to the offer shown there.
Keep historical prices attached to their panels
September 2026 gameplay displays several tank offers. Use them to recognize the menu’s format, then check your own next offer rather than treating them as a universal price ladder. Check your current cash amount, Robux amount, and stated benefit before choosing.
| Displayed example | Cash-style choice | Robux-style choice |
|---|---|---|
| Introductory offer | FREE label | No general later-price rule follows from this |
| Another upgrade panel | 500 | 20 |
| Later panel in one setup | 2.5k | 40 |
| Larger-tank panel | 12.5k | 80 |
| Panel in a different setup | 2.5k | 29 |
Notice the two 2.5k examples with different Robux amounts. Do not merge them into a fixed conversion rate or decide that one is the price every player must receive. Your own offer panel is the relevant purchase check.
The larger tank provides a visible change to the display, but the price examples do not supply a pet-capacity chart. Use the benefit described by the current upgrade rather than assigning a slot count to each historical amount.
Compare the payment choice you intend to use
When the panel presents cash and Robux alternatives, read them separately. A cash-style figure and a Robux-icon figure are different ways the offer is displayed; do not add them into a supposed combined cost.
Inspect the chosen button and any details it opens before confirming the purchase. Keep the currency symbol beside the number in your decision. A large-looking cash figure cannot be compared directly with a small Robux figure without understanding the two balances and the offer’s terms.
If you are still learning the rescue loop, finish placing your clean animal before browsing later expansions. That gives you a clear distinction between adding a pet and buying development for the aquarium around it.
Diagnose the aquarium task before spending
Ask what you are trying to change. Are you carrying a clean pet that needs placement? Do you want to inspect an animal’s card? Or are you deliberately developing the tank structure?
| Your task | Relevant control | What to read |
|---|---|---|
| Add a clean animal | Add to Tank | The placement interaction |
| Inspect the collection | Edit Tank | Pet names and displayed card values |
| Develop the structure | Upgrade Tank | The current benefit and price choices |
| Sell an animal | Sell Pets at SELL | The separate selling interface |
Use tank placement for the first two controls. Use pet selling when a sale is your intended action. For placement or selling, choose the matching control even when the expansion button is closer.
Recheck the display after an upgrade
After choosing a Surf And Rescue tank upgrade, inspect the resulting tank and its next offer. Read the next offer as it now appears, alongside the tank you just upgraded. A later panel can change, so do not assume it follows a geometric cost formula based on the amounts in the table.
When comparing income, read the pet cards and tank rate labels themselves. Use the animal’s card for its rate and the visitor display for any payment information; the upgrade price supplies neither figure. Continue with pet income for that separate comparison.
FAQ
Is every tank upgrade free?
No. The introduction displays a FREE offer, while later examples show currency choices. Read the panel for your current tank.
Is 2.5k always paired with 40 Robux?
No. Another September 2026 panel pairs 2.5k with 29 Robux. Treat each offer as its own displayed state.
Do I pay both listed currencies?
Read the payment option you select. The interface presents cash and Robux choices; do not combine the figures into one assumed charge.
How many pets does each upgrade add?
Inspect the current benefit description. The historical price panels do not establish a capacity table.
Does Upgrade Tank add the pet I am carrying?
Use Add to Tank for placement. Upgrade Tank is the separate structural offer.