RO unit DI ??

[OceanMist]

my tanks only been running for a few weeks but so far its 100% RO water, I've now read that RO by itself will not remove PO4, is this true? if so would it be worth adding an inline DI cartridge for water changes ?? TIA

 

[austinsdad]

Have you tested your RO water for phosphates?

 

[melosu58]

if so would it be worth adding an inline DI cartridge for water changes ?? TIA

 

[OceanMist]

Thanks, I don't have a phosphate test kit but the DI stage probably wouldn't cost too much more, so it may be worth just getting one anyway.