A few things to check:
- Was the liquid culture transparent when you received it? That's normal, it means the mycelium hasn't visibly colonised the liquid yet.
- Did you shake the syringe gently before use to distribute the mycelium evenly?
- What substrate and temperature did you use?
Send us the details along with your order number and a photo. We'll help troubleshoot or arrange a replacement if the product was defective.