Neptune apex MPR probe holder-$20
Avast marine large secondary chamber for calcium reactor-$50
1/4” flow sensor for apex new in package-$15
Sicce Extreme-E Dc Powerhead-$80
2-Neptune Pmup pumps-$40
Neptune optical sensor used-$20
Neptune LDK module with two probe but don’t think they are good-$40
2-Neptune temp sensors-$10 each or $20 for both