The mold thing is really sad. We had a super wet and humid summer so I added a fan to my setup.
I let the branch with the seeds live to let them finish up.
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Set up cost (fixed costs)
-Lamp: 40β¬
-Timer: 3,5β¬
-Pot: 4β¬
-Total fixed costs: 47,5β¬
Given 5 years (or 15 grows) usage time translates to around 3,17β¬ per grow in materials.
Variable costs:
-Seeds: 3,17β¬
-Soil: 6β¬
-Fertilizer: 3,50β¬
-Power (100 days 18h/day): ~25,92β¬ (exact figure after harvest)
-Total variable costs: ~38,59β¬
-Total costs per grow: ~41,76β¬