# Depositing Test Coins in Fireblocks Sandbox: Balance Stuck at Zero

**URL:** <https://community.fireblocks.com/t/depositing-test-coins-in-fireblocks-sandbox-balance-stuck-at-zero/911>\
**Category:** Developer Discussion\
**Created:** [April 16, 2024, 2:49pm UTC](https://community.fireblocks.com/t/depositing-test-coins-in-fireblocks-sandbox-balance-stuck-at-zero/911 "2024-04-16T14:49:39Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Adriatik](https://sea1.discourse-cdn.com/flex015/user_avatar/community.fireblocks.com/adriatik/32/219_2.png) [@Adriatik](https://community.fireblocks.com/u/Adriatik)\
**Post date:** [April 16, 2024, 2:49pm UTC](https://community.fireblocks.com/t/depositing-test-coins-in-fireblocks-sandbox-balance-stuck-at-zero/911/1 "2024-04-16T14:49:39Z")

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Hi,

I’m sending test coins to a certain BTC\_TEST address, but the balance is still zero, it’s not changing even though the transfer was successful (sandbox mode). The coins are being sent from an external address. Can anyone advise what could be causing this problem and how to fix it?

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**Author:** ![Wilfred](https://sea1.discourse-cdn.com/flex015/user_avatar/community.fireblocks.com/wilfred/32/403_2.png) [@Wilfred](https://community.fireblocks.com/u/Wilfred)\
**Post date:** [April 17, 2024, 6:04am UTC](https://community.fireblocks.com/t/depositing-test-coins-in-fireblocks-sandbox-balance-stuck-at-zero/911/2 "2024-04-17T06:04:32Z")

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Hi @Adriatik i can see that there were incoming transactions for vaults 6,10,13,15 and all these vaults have non-zero balance for BTC\_TEST.

Could you advise which vault you are seeing a zero balance for BTC\_TEST?

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**Author:** ![Adriatik](https://sea1.discourse-cdn.com/flex015/user_avatar/community.fireblocks.com/adriatik/32/219_2.png) [@Adriatik](https://community.fireblocks.com/u/Adriatik)\
**Post date:** [April 17, 2024, 6:35am UTC](https://community.fireblocks.com/t/depositing-test-coins-in-fireblocks-sandbox-balance-stuck-at-zero/911/3 "2024-04-17T06:35:42Z")

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Hi @Wilfred thanks for your response, yeah it seems that the transactions arrived a few minutes after I posted the question; there seemed to be a delay in transactions. Everything looks good now, thank you.

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**Author:** ![Wilfred](https://sea1.discourse-cdn.com/flex015/user_avatar/community.fireblocks.com/wilfred/32/403_2.png) [@Wilfred](https://community.fireblocks.com/u/Wilfred)\
**Post date:** [April 17, 2024, 9:01am UTC](https://community.fireblocks.com/t/depositing-test-coins-in-fireblocks-sandbox-balance-stuck-at-zero/911/4 "2024-04-17T09:01:32Z")

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@Adriatik thanks for your response too. Glad to hear everything looks good for now!