Packed and shipped by our friends at AquaticMotiv (Newark, NJ), with its own tracking. Orders are processed in 1–4 business days; non-live items ship any day of the week. US only.
Returns: email support@mossandmolt.com with your order number first, and don’t send anything back until you get the go-ahead and the return address. The buyer pays return shipping.
Black Venom Nano Boulder
This item is provided by our friends at AquaticMotiv ↗ (opens in a new tab) (Price Matched)
We aren't producing this at the Moss & Molt facility yet. So we don't leave you hanging, here's a link to our favorite distributor, AquaticMotiv. We'll be producing our own soon. Opens in a new tab.
$15.99 AquaticMotiv's price, before shipping (checked Oct 23, 2026)
About
Black Venom is an igneous stone broken into pieces under about 4 inches, sized for nano tanks and terrariums. It looks dark grey when dry and turns close to black once it's underwater. The surface is smooth and glazed, with a winding, maze-like pattern of grooves.
Specs
Material: igneous stone · Piece size: under 4 in (10 cm) · Color: dark grey dry, near-black wet · Water effect: may slightly raise pH and hardness
Using It
It suits ryoboku-style scapes and looks good with moss and small plants tucked into the grooves. Rinse it well first. Since it can push pH and hardness up a little, check GH and KH after adding it to a soft-water shrimp tank. Stack pieces so they can't tip over.
Photos © AquaticMotiv, used with credit.
Information sourced from AquaticMotiv