A dedicated printed reservoir for the Hydro Tower Mini, if you'd rather not use your own bucket.

Holds 2.5L — good for up to 4 tiers. If you're running more than that, stick with a bucket reservoir instead for the extra headroom; this one's purpose-built for the Mini's smaller setups.

A big print job on its own — 12 hours — which is why it's priced and sold separately rather than baked into everyone's base kit price.

3D printed from recyclable, biodegradable PLA, one at a time, by hand.

If we're out of stock when you order, that's not a problem — it just means we print yours fresh, specifically for you, instead of pulling it off a shelf. One of our printers gets loaded up just for your order and it's in the post within 72 hours. You're not getting whatever's been sitting in a box the longest — you're getting one made for you.