Grain Rock is a heavy, high-mass aquascaping stone characterized by its solid, fine-to-coarse mineral structure and substantial weight per volume. Its tight grain density makes it exceptionally durable and stable, making it ideal for anchoring heavy hardscapes, holding steep substrate slopes, and serving as a massive centerpiece foundation in large planted tanks and biotope aquascapes.
Grain Rock | 2.5KG
Grain Rock | 2.5KG
Important note: This is a natural stone, being natural we won't be able to give you the exact pattern shown in the listing. We will pick random sizes and patterns equal to the weight you have purchased. For sizing, see details below.
sizing details
To request a specific rock size (Small, Medium, or Large), please leave a preference in your order notes at checkout or send us a follow-up email after placing your order. Size requests are fulfilled based on current stock availability. You are always welcome to contact us before ordering to confirm real-time stock levels for your preferred size.
LENGTH (AVERAGE)
Over 20cm
WEIGHT REQUIREMENT
Average stone in this size weighs upwards of 6kg. A minimum order qty of 3 amounts may be required for a single large piece.
NOTE
Actual stone will vary from the images shown. As a natural element, exact colors, shapes, weights, and dimensions may differ slightly from the specifications listed above.
medium
LENGTH (AVERAGE)
15-20cm
WEIGHT REQUIREMENT
Average stone in this size weighs roughly 3-5kg. A minimum order qty of 2 amounts may be required for a single piece.
NOTE
Actual stone will vary from the images shown. As a natural element, exact colors, shapes, weights, and dimensions may differ slightly from the specifications listed above.
small
LENGTH (AVERAGE)
Under 15cm
WEIGHT REQUIREMENT
Average stone in this size weighs up to 1.2kg. One qty is sufficient for at least two pieces.
NOTE
Actual stone will vary from the images shown. As a natural element, exact colors, shapes, weights, and dimensions may differ slightly from the specifications listed above.
Transform your aquarium with authentic, wild hardscape materials from Aquatees. We supply thousands of kilograms of naturally sourced aquarium rocks, premium driftwoods, Tweety wood, and fine sands—bringing raw, untreated nature straight to your tank. Because our hardscape is harvested directly from the environment, simply give your pieces a brief rinse to remove natural dust before building your dream aquascape.
Because of its high density and heavy weight, use 0.35 to 0.45 kg per liter for standard layouts, or 0.5 kg per liter and above for high-stacked or centerpiece-heavy hardscapes.
Most dense-grain metamorphic and granite-like stones are inert and will not alter pH, KH, or GH. (If the stone has fine calcite veining, it may slightly buffer water hardness over time, which routine water changes will easily balance).
No. Due to its thick, tightly packed mineral grain, it is much harder to break than porous volcanic stones or layered slate. Splitting it requires heavy tool work with a sledgehammer, cold chisel, or masonry saw along its natural seams.
Scrub and rinse the stone thoroughly with plain fresh water to remove any loose surface sediment or dirt trapped in its fine texture before placing it in your tank.
Yes. Submerging the stone under tank lighting darkens its base tones, intensifying the contrast of its natural grain, mineral flecks, and surface textures.
