[syncro]

My tank
- 40G, over 1 year old
- 0 nitrates - probably because of the 3.5" deep sand bed
- livestock: anemones, soft/lps coral and 5 small fish
- macro algae will not grow
- cyano growing all over sandbed

I could use a phosphate remover but this will likely prevent any macroalgae growth and soft coral and LPS prefer some nitrates. So instead I'm thinking to increase nitrates so that macroalgae can outcompete the cyano. This is based on the redfield ratio idea - which seems to be more common in freshwater planted tanks and less so in reef tanks.

I'm thinking of:
- manually removing/cleaning all cyano
- adding chaeto
- dosing 0.5 mg/L daily, slowly increasing to 5 mg/L over a month

Thoughts? Thanks!