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CoolTube is a white, soft poly hose made for hydroponic use. It is 4mm thick and comes in 30 meter rolls - cut as required. It will cool your nutrient by up to 10% over black poly pipe and increase dissolved oxygen by 20%. It has a dual black layer on the inside and a white outer construction.
1 roll of 4mm thick white soft poly hose and is 30 meters in length
