The Biological Fragment
The Biological Fragment
Free shipping over $35. Flat $4.95 below that.
Shipping timeline
From "order placed" to "in your tank."
14-day easy returns
Not the right piece? Send it back. No restocking fee.
Email us within 14 days
One sentence is fine — we don't need a reason. We'll reply with a prepaid return label.
Drop it at any USPS
Reuse the original packaging if you have it; any padded box works.
Refund in 2–3 days
Once we receive the piece, we refund to the original payment method.
Build the scape
Composing is better with options. Save when you pick up more than one piece.
Save 10%
Add any two pieces to your cart. Discount applies automatically at checkout.
Save 15%
Three or more pieces — mix and match freely from the full catalog.
Composing is better with options.
Hardscape rarely sits alone. Pick up two or three pieces and the discount stacks automatically at checkout.
Built for the planted tank
Hardscape that earns its place — not decor.
Aquarium-safe resin
Non-toxic, fish-safe resin. Won't leach, won't shift pH. Safe for shrimp.
Won't fade or warp
Holds color and shape after years submerged. No bleaching, no softening, no algae traps.
Hand-finished texture
Each piece is hand-finished so the bark grain reads like real wood, not molded plastic.
Fresh + saltwater
Use in any planted, marine, or brackish tank. Equally at home in terrariums.
Easy to clean
Smooth interior. Rinse with water and a soft brush — no chemicals needed, ever.
In the wild
Tanks built by Frondsmith customers. Tag @frondsmith to be featured.
