Recipe for BRICK BACKGROUND is: BRICKS and BLACK BLOCK. BRICK BACKGROUND is in building category. No need for growspray here, will be done in a jiffy. BRICK BACKGROUND gives experience points when broken. How many times you need to hit it? Head to the wiki for more info: <a href="https://growtopia.fandom.com/wiki/Brick_Background">brick background</a> Seed mathematics is very complicated, but you should get at least 1 seed back from splicing BRICK BACKGROUND. Profiting with this might be questionable. Blockratio of BRICK BACKGROUND is a mystery. Maybe you can check the wiki for <a href="https://growtopia.fandom.com/wiki/Brick_Background">brick background</a>