Hydro Logic Merlin Garden Pro Green Coconut Carbon Filter (HL22080) Air & Surface Purifiers and numerous others

and numerous others

Because there is more room above your lights for the heat to rise and then dissipate

Tested and developed to work perfectly with magnetic ballast

Probe can be located in the reservoir tank

Hydro Logic Merlin Garden Pro Green Coconut Carbon Filter (HL22080) Air & Surface Purifiers and numerous othersThe Hydro Logic Replacement GreenBlock Coconut Carbon Filters are made using high performance coconut shell green carbon which has more micro pores compared to other types of carbon and features a unique binder system delivering a product with superior absorption capacity and kinetic dynamics. Use this to replace your carbon filter for the Hydro Logic Merlin filtration units.