You can make ACID by combining PLUMBING and CACTUS. This item belongs to damage category. Growing ACID takes less than half a day, so no worries yeah. Low level players can use these to level up. Hitting it will break it but you need to count the hits yourself. Seed mathematics is very complicated, but you should get at least 1 seed back from splicing ACID. Gemratio of ACID is a mystery. Maybe you can check the wiki for <a href="https://growtopia.fandom.com/wiki/Acid">acid</a> Will you get enough blocks to build something? You just have to find out yourself.