I have a couple things laying around that I never use.
Hanna phosphate ulr checker hi774 used a few times just not something I used often. $35 obo
Hanna calcium checker hi758 too finicky for me. $35obo
red sea foundation pro test kit. i won this in a raffle used it a few times just for comparison but ill stick to salifert kits. $20
Open to coral trades too doesnt hurt to ask
Hanna phosphate ulr checker hi774 used a few times just not something I used often. $35 obo
Hanna calcium checker hi758 too finicky for me. $35obo
red sea foundation pro test kit. i won this in a raffle used it a few times just for comparison but ill stick to salifert kits. $20
Open to coral trades too doesnt hurt to ask