cyano problem

[redadeath]

i got cyano bloom in my sump

i use algae scrubber
chaeto

sulphur reactor

all make my nitrates zero all the time

phosphate is zero too

my sump is full of cyano

?? what should i do

also have some cyano on the botton of the tank

[SantaMonica]

How much liquid feeding?

[redadeath]

daily but quit feeding two days now

[SantaMonica]

Liquid feeding is always going to make some cyano grow, because the cyano gets the nutrients from the food before the food ever gets to the scrubber. If you want to be able to feed liquid, but with less cyano, you need a stronger scrubber.