Dosing nutrients question

[djryan2000]

My tank has an oversized algae scrubber for how much I am currently feeding, leading to phosphates being stripped to 0 (Hannah ULR) and nitrates slowly rising. I want to dose phosphates to add some but I anticipate this means more growth in the scrubber and more nitrates being removed as well. Is this correct? Should I also purchase nitrate dosing supplements?

 

[pledosophy]

Phosphate is absorbed around 1 part to 30 parts nitrate if I remember correctly for the algae scrubbers produce. It would only take the tinest amount of phosphate to increase that nitrate uptake. I would start low and go for it.

If you are keeping corals, having a 0 phosphate is not great.

 

[djryan2000]

Phosphate is absorbed around 1 part to 30 parts nitrate if I remember correctly for the algae scrubbers produce. It would only take the tinest amount of phosphate to increase that nitrate uptake. I would start low and go for it.

If you are keeping corals, having a 0 phosphate is not great.

Thanks! Yeah my tank is full of SPS frags and some are starting to bleach, particularly the monti caps and birdsnest.

 

[pledosophy]

Thanks! Yeah my tank is full of SPS frags and some are starting to bleach, particularly the monti caps and birdsnest.

If you alk is staying stable it could be nutrient related. Could also be lighting. Hard to know with frags newer to a system.