I find the opposite when it comes to acans , if nutrients get too low they are not happy. It also depends “how” they’ve gotten too low. If you are feeding the tank plenty ,and the nutrients are naturally low ,due to denitrifying bacteria doing their job, then it’s usually not an issue, however if they’re low from excessive carbon dosing , and stripping the water with carbon/gfo etc , then LPS and in particular acans will suffer ime.
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