Icp test loosing acro collection

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Rick j

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Any input on icp test po4 bottomed out the. Dino showed up then rtn/stn burned tips algae on tips I e checked throughly for pest. Stray voltage every morning a few dead

AA0DACD8-DDEC-4380-B783-2A7399E007C8.png 743823DE-CE66-4AE0-9DFF-F524E09E6928.png B57A1A0C-EA6C-481D-8336-D8DEC6E68B59.png 6084D536-32CB-4787-8D25-094FEA01BF72.png
 
Sounds to me like phosphorus deficincy. I'd try raising PO4 above .03 mg/l. Here's some links to refference to phosphorus in reefs systems:

An Experimental Mesocosm for Longterm Studies of Reef Corals

Phosphate Deficiency:
Nutrient enrichment can increase the susceptibility of reef corals to bleaching:

Ultrastructural Biomarkers in Symbiotic Algae Reflect the Availability of Dissolved Inorganic Nutrients and Particulate Food to the Reef Coral Holobiont:

Phosphate deficiency promotes coral bleaching and is reflected by the ultrastructure of symbiotic dinoflagellates

Effects of phosphate on growth and skeletal density in the scleractinian coral Acropora muricata: A controlled experimental approach

High phosphate uptake requirements of the scleractinian coral Stylophora pistillata

Phosphorus metabolism of reef organisms with algal symbionts


Sponge symbionts and the marine P cycle

Phosphorus sequestration in the form of polyphosphate by microbial symbionts in marine sponges


Fig. 4 from the above paper "Phosphorus metabolism of reef organisms with algal symbionts"
DIP DOP POP.jpg
 
I’ve had the same happen recently without the Dino’s. My phos and nitrate bottomed out slow stn around my sps bases. Then a little tip burn on my SSC. I noticed my alk went from 8.3 up to 9.5 idk how or when but I slowly lowered back to 8.3 over a week. Also I now dose phosphate up to .05 daily it’s been 0 every time I check still. And in the beginning I dosed nitrates to 7ish. The stn has stalled and I’m hoping for a bounce back
 

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