The max green house effect U can get is 300 15 for each wall or ceiling (it has to be sealed meaning no holes in the building

Also just tame a achatina/snail an they will drop achatina paste. Achatina drop achatina paste and it works like semeting paste.

Greenhouses are a lot of Resources if your a beginner. Get yourself a anky and the anky will get you Bunch of metal and crystal

Wear headphones at full loudness and break one, have fun being deaf for the rest of your life