FAQ: Will Seachem PhosNet™ affect my pH, GH, or KH?

PhosNet™ is not capable of impacting the mineral concentration in any way, so it will not directly impact the GH of the aquarium.  It adds neither buffers nor acids, but if you are using a phosphate-based buffer to control your pH (Neutral Regulator®, Discus Buffer®, Etc) then use of a phosphate absorber like PhosNet™ will absorb the buffer from the aquarium, rendering it useless.  We do not recommend using phosphate absorbers in this type of aquarium.