Amphipods and Macros

[goody]

Some of my red macros have started to diminish. I only have a couple of green macros, so I don't attribute it to the greens
outcompeting the reds for the nutrients. I am dosing Chaetogro and stopped dosing Ferrion because my last ICP test had iron really high.
No3 is 16
Po4 is .04
I always thought amphipods are good to have in the refugium but now I'm wondering if they can be eating my macros. I didn't realize how many were in my tank until I looked closely tonight.

 

[TX_REEF]

How’s your lighting and flow on them?

 

[goody]

How’s your lighting and flow on them?

Running a Hygger freshwater full spectrum light at 100% for 12 hours. This is the middle section of my sump. Not sure of my flow through it, but I also run an OW-10 on max speed.

 

[irwinsbugs]

Some of my red macros have started to diminish. I only have a couple of green macros, so I don't attribute it to the greens
outcompeting the reds for the nutrients. I am dosing Chaetogro and stopped dosing Ferrion because my last ICP test had iron really high.
No3 is 16
Po4 is .04
I always thought amphipods are good to have in the refugium but now I'm wondering if they can be eating my macros. I didn't realize how many were in my tank until I looked closely tonight.

amphipods will only feed on dead/decaying macros, I would assume lighting/nutrition deficiency