Dropping by GT tesseract info:
GT tesseract are a bit fancy, as they extend the inventory they're attached to (tesseract generator's back facing the block you want to "tesseract").
For a fully functional tesseract you need three blocks: the inventory you want to extend, the tesseract generator and the tesseract terminal.
The tesseract generator is the main block, power consuming one. You set its frequency so it can connect to a tesseract terminal.
The tesseract terminal is the secondary block which frequency must be adjusted to match the generator. Every terminal linked to the generator will make the generator consume 8 (32 if interdimensional) EU/t.
Any automation (item/fluid in/output) on the tesseract generator and/or the tesseract terminal will be "applied" to the block you're extending.
For example a quantum chest extended by one generator and terminal. If you insert fluids on the terminal, it will be sent to the quantum tank.
Also, if you use a pump cover (import) on the terminal, the quantum tank will be drained.
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Pyure my nickname comes from "Spawn" , at the times of counter strike 1.6 , very old stuff.