Help! Corals/Coralline Won’t Survive

I did a few big water changes a while ago, I could do a reset like that but I have been a little worried about the ammonia cycle. Do I need to worry about that?
No worries as the bacteria is in the rock and sand. Looks like you have plenty of rock. So 25% would be no problem.
 
Red Sea foundation pro for Cal, Mag, and Alk, API for the ammonia cycle. I occasionally get my water tested and thats how I get my phosphate levels.
Any idea what they use for phosphate?

some of the kits are useless as the range is 0 and 0.25 with nothing in between so 0.08 may show as 0.
 
Any idea what they use for phosphate?

some of the kits are useless as the range is 0 and 0.25 with nothing in between so 0.08 may show as 0.
Not sure, they have something they call a spin test and it does everything except trace elements. Its a very accurate test, Magnesium, Calcium, Ph, Ammonia, Alkalinity, Nitrates have always been exact
 
My plan at the moment is to do a large water change or two and then start feeding more pellets and food and not touch it for a 2-3 weeks.
 
Not sure, they have something they call a spin test and it does everything except trace elements. Its a very accurate test, Magnesium, Calcium, Ph, Ammonia, Alkalinity, Nitrates have always been exact

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Min detection limit is 0.2ppm so it is not very accurate for PO4. It is made by API.

This is why I asked specifically about phosphate. Many tests are poo poo for saltwater PO4.

You should buy a real PO4 test kit before dosing PO4.
 
If you find feeding more is not producing the right numbers you can dose neophos and neonitro to bring those areas into balance.
This. I dose these and they’re very helpful when my nutrients get too low.
 
This. I dose these and they’re very helpful when my nutrients get too low.
I had to double dose both for multiple weeks before i got measurable numbers.
 

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