Brightwell BlackWater Extract Variant:2L for impellers with straight fan

for impellers with straight fan blades only is suitable for ::

Reef Glue™ won't dry up in the tube

For betta aquariums up to 3 gallons

elevated base

Flow at 1' - 2400 gph

Brightwell BlackWater Extract Variant:2L for impellers with straight fanProvides Humic Substances for all Planted & Blackwater Biotope Aquaria Overview Establishes similar water conditions to those found in black water rivers, many of which are home to important aquarium fishes and plants. May be used to help simulate the onset of the rainy season for encouragement of fish spawning. Provides humic substances (humic and fulvic acid), complex bio organic molecules known to increase the availability of important nutrients