Tier 1 Aquarium

Taken all the way down to base materials, one Tier 1 Aquarium is 3 crafting steps deep and needs 4 intermediates — Rosewood Lumber ×3, Clear Glass Lens ×1, Electrum Ingot ×1 and 1 other — which resolve to 7 distinct raw materials totalling 21 units, plus 31 crystals.

That bill outweighs 8,152 of the 13,602 recipes tracked here and 815 of the 1,552 Carpenter ones, and 337 recipes nest deeper.

Only 3 of those crystals go into the final step; the other 28 are burned by the intermediates, so the real crystal cost is 23 Wind Shard, 5 Water Shard, 2 Wind Crystal and 1 other kind.

The chain crosses three disciplines — Carpenter to Lv 50, Goldsmith to Lv 42 and Alchemist to Lv 28 — so no single class can finish it unaided.

All 7 raw materials are gathered, and not one of their spots is timed, so nothing in the tree waits on the Eorzean clock.

Of the intermediates, Electrum Ingot has the widest use: 234 recipes call for it, spanning seven of the eight crafting classes.