Base Rocks
The frame of your reef: base, arch, shelf and mixed rock, smaller nano rock and a 20 kg mixed box.
How to choose?
€78.99
Unit price: €3.95 / kg
from€108.99
Unit price: €10.90 / kg
from€108.99
Unit price: €10.90 / kg
from€108.99
Unit price: €10.90 / kg
€51.99
Unit price: €14.85 / kg
from€108.99
Unit price: €10.90 / kg
Advice and care
How to choose reef rock
Rock shape decides whether you get caves, shelves or open space for corals.
Base
Lay stable base rocks first to carry the rest of the build.
Arches and shelves
Arch rocks make caves, shelf rocks flat spots for corals.
Fixing
Glue the rocks together so the reef cannot topple.
Popular brands
All brandsFrequently asked questions
Does dry rock need treating before use?
Rinse off the dust and add nitrifying bacteria to the new tank. Dry rock needs time to be colonised.
What is nano rock for?
It comes in smaller pieces that suit the scale of a marine nano tank.
Read more
Base rock carries the whole reef: corals are later fixed on and between it, and the bacteria in its pores help keep the water clean. Because rock is hard to rearrange later, plan the structure before water and livestock go in.
How much rock you need depends on tank size and style. An open reef leaves fish more swimming room, a denser one gives corals more places to attach. Base rock forms a stable foundation, arches create caves and overhangs, and shelves give flat surfaces. A mixed box is handy for several shapes in one pack, and nano rock suits the scale of a small tank.
Build the reef dry on a table first and fix the rocks together with rock glue or epoxy putty. Everything must hold even when a fish or shrimp digs underneath. Before adding corals, rinse off the dust and seed the rock with bacteria.
