Recipe for HIGH TECH BLOCK is: ROBOT WANTS DUBSTEP and GREY BLOCK. You can find this item in building category. It takes 3d 19h 49m 39s to grow HIGH TECH BLOCK from seed to tree. For basic breaking and levelling up. How many times you need to hit it? Head to the wiki for more info: <a href="https://growtopia.fandom.com/wiki/High_Tech_Block">high tech block</a> By default you should get at least 1 seed back. Gemratio of HIGH TECH BLOCK is a mystery. Maybe you can check the wiki for <a href="https://growtopia.fandom.com/wiki/High_Tech_Block">high tech block</a> Massproducing HIGH TECH BLOCK can be tricky. You will find out after you have harvested a few.