Identification of a parasite

[Boomerang]

I'm trying to identify these lil critters in my tank. I have lost 90% of my fish & 3 emerald crabs. My tank parameters are gold. dKH - 8.7 nitrates at 35.0 phosphate is at 0.13 salinity at 35ppm pH at 8.3 calcium at 450 magnesium at 1380. Now my acros are dying fast. Any help would be awesome. Current stop is 1 sixline wrasse, 1 sailfin, 2 firefish, 2 turbos & 6 hermit crabs

 

[Cichlid Dad]

Copepods good for the tank

 

[Cichlid Dad]

I'm trying to identify these lil critters in my tank. I have lost 90% of my fish & 3 emerald crabs. My tank parameters are gold. dKH - 8.7 nitrates at 35.0 phosphate is at 0.13 salinity at 35ppm pH at 8.3 calcium at 450 magnesium at 1380. Now my acros are dying fast. Any help would be awesome. Current stop is 1 sixline wrasse, 1 sailfin, 2 firefish, 2 turbos & 6 hermit crabs

Your tank is to new for acro, what size tank is it and how old

 

[vetteguy53081]

Free food for fish and coral and as for loss, how are you testing your levels?
Tank should be ok for coral as long as numbers remain constant and readings are accurate. There are beginner acros that are forgiving and many that will not tolerate swings

 

[Boomerang]

Your tank is to new for acro, what size tank is it and how old

Acros have been doing really good & my tank was stable. I checked parameters every Wednesday. I had an urchin in the sump. It died & I didn't know. NO³ is at 0.00 now tho. Now I'm testing for copper. It was at 0.11 last night. Doing a 20 gallon water change today. Hopefully it helps

 

[Boomerang]

Free food for fish and coral and as for loss, how are you testing your levels?
Tank should be ok for coral as long as numbers remain constant and readings are accurate. There are beginner acros that are forgiving and many that will not tolerate swings

 

[Reefering1]

NO³ is at 0.00 now tho. Now I'm testing for copper. It was at 0.11 last night.

Im getting confused, So is NO3 0.0 or 37.2(as your picture shows) ? And copper is .11 in your display tank?

 

[vetteguy53081]

Numbers look good- How are you testing?