Liquid Carbon Supplement 500ml

The 500ml economy size of this glutaraldehyde-based liquid carbon supplement is identical in formula to the 250ml bottle but offers approximately double the dosing volume at a lower cost per millilitre. It is the practical choice for hobbyists who have established daily liquid carbon dosing as part of their routine and want to reduce restocking frequency.

Liquid carbon is the most widely used non-CO2 supplement in the planted tank hobby, bridging the carbon gap between natural CO2 production and what heavily planted tanks consume. Regular dosing noticeably improves plant colour and growth rate in non-CO2 tanks, particularly for plants with moderate to high light demand.

The larger format also suits multi-tank households where liquid carbon is dosed across several aquariums simultaneously. Its algae-suppressing properties are a reliable first line of defence against persistent BBA and green spot algae outbreaks.