Black Venom 

A rich and bold black colouration, combined with star, clean lines and textured surfaces make these stones into an essential part of the Aquascaper’s pallet. When used alongside bright green plants, especially those with soft textures such as Eleocharis, these rocks bring impact and drama to the display.

Available in 2kg bag.

*This rock may raise pH and hardness slightly. 

*Standard regular water changes are enough to keep the hardness under control.

About product line

Nano Rocks

Please, follow our recommendations to enjoy your hardscape: 

• Please rinse nano rocks with water before use. Some rocks as Dragon stone may contain soil and loam deposits on its unique dragon scale shape. Please, use a brush to clean it before introducing the stones in the aquarium. 

• You can easily test if a nano rock is inert or if it will change slightly the pH and hardness. Simply place a few drops of vinegar on the rock. If the vinegar (a base substance) fizzes or foams, it indicates that the rock contains some calcium.

• Nano rocks with calcium may alter the pH and kH. This can be especially pronounced if you have acidic water or CO2 addition. You can easily control it by regular water changes with osmotic or soft water. You can also use a water softener.