Do reactors equal less water changes?

[saltyair]

IMO - it all depends on livestock,bio-load and equipment.

if you don't have a skimmer and or refuge i would say no.

if you are able to control NO3 and PO4 with calcium and trace elements then yes you could significantly lower the % of WC.

again IMO - WC can correct and keep things in check and not create an issue that takes time and energy to correct.