If you're looking for info on how to get the JackSepticEye Septic Tank Item in Subnautica, then look no further. Once Subnautica was fully released, the option to redeem a code in-game was disabled, however I have found a way to redeem codes in-game in 2020. This means that you can use a code to receive the Septic Tank easily!

Launch the experimental version of Subnautica
To do this, follow these steps:

1. Navigate to your Library
2. Right click Subnautica and select properties
3. Click the 'betas' tab
4. Open the dropdown menu and select the 'experimental' beta
5. Click close

Now allow Subnautica to update, and launch the game when it is ready.
Now we need to redeem the code to recieve the Septic Tank
1. After opening Subnautica, go into the settings menu from the title screen
2. Then select "Redeem a Key" and paste in the code below: