Build a springtail culture that’s easy to maintain.

HPI Calcium Clay is our dry springtail culture medium for building starter cultures, master cultures, and backup cultures without guessing at the setup.

Pick what you need: a ready-to-mix master culture cup, a bulk refill pouch, empty culture cups, or breathable vent tape.

8 oz Master Culture Cup + Clay Powder
Comes with one heavy-duty 8 oz deli cup + lid and a separate pre-measured packet of Calcium Clay. Simply hydrate, mix, and seed with springtails! Instructions included.

1 lb Calcium Clay Refill Pouch
Bulk dry Calcium Clay in a resealable pouch for making or refreshing multiple cultures.

8 oz Empty Culture Cup + Lid
Need more cultures without another full kit? Grab the cups, add some clay, and build your own.

Breathable Vent Tape Roll
Use it to cover a small ventilation hole. Approximately 10 yards per roll.

Complete the setup: Add a live springtail starter culture and feed with Holy-Poly Springtail Food.

Springtails and Food are sold separately.

Clay colors may vary.

For springtail culture use only. Not for human consumption.