50% water change timing?

[TRDfan]

I did a 50% water change to get some GHA under control on 10/22. I would like to do another 50% change to get my phosphates really low.

How long should I wait to do so?

 

[pkane11384]

Just curious. What else are you doing to combat the GHA? Are you running a reactor?

 

[TRDfan]

Not yet. I figured out what my issue was after getting a TDS meter. My RODI unit needed new filters ASAP after reading some insane #s on the TDS meter. Now I'm back to getting 0ppm in my water

 

[Tonyscoots84]

i would run a phosban reactor with phosban and if you have the funds get another reactor and run carbon. me personally i would wait a few days to a week for another 50%. just make sure all parameters are the same (temp, salinity).