Splice TOILET and AQUA BLOCK to make WATER BUCKET. WATER BUCKET is in face category. Plant 40, harvest 40, brake all the blocks, repeat. WATER BUCKET gives experience points when broken. 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 WATER BUCKET. Gemratio of WATER BUCKET is a mystery. Maybe you can check the wiki for water bucket Massproducing WATER BUCKET can be tricky. You will find out after you have harvested a few.