Cycling Tank

[Aquattro]

Which lights are on 24hours? The old rock is probably leaching PO4, feeding the algae. I'd do larger water changes if it were my tank.

[Steve...]

the lights for the refugium, not the DT. So how much is a large water change?

[Aquattro]

Originally Posted by Steve...

the lights for the refugium, not the DT. So how much is a large water change?

how much can you make at once?

I do regular 25% changes on mine, keeps nutrients at 0, assuming a good skimmer. Do 50g if you can..but also think long term in management rather than trying to clear it up right away.