The first 3 months all the SPS were all coloring up and developing growth tips. I had a mix of beginner acropora, montipora, stylophora, and birds nest. All aquacultured. About a month ago I had a nutrient swing where they went from ~.07 phosphate and 12 nitrate to 0 for both. I was trying to start nopox as I had some nuisance algae. I got nutrients back up to acceptable ranges over the course of a week and ever since I’m losing all my SPS one by one. Alkalinity is tested every 1-2 days and I haven’t picked up any swings.
A month out I’m still losing corals. Is this all a delayed response to the nutrient swing or am I missing something here? I can’t imagine that stylophora and birds nest are that sensitive. I’ve tried turning down the lights to ensure I’m not blasting them with too much PAR and it has not helped. Only other thing I’ve recently found was some surface rust on my inkbird temp probe. I don’t see any signs of parasites at night or fish going for the corals.
Parameters
Alk 7.7
Calcium 450
Mag 1300
Phosphate 0.14
Nitrate 7.8
pH 8.0
Salinity 1.026
System details - 47g tank, 10 or 20% water change weekly, lighting done by two radion XR15s, flow is by two MP10s on reef crest at 100%, nutrient export by a Tunze MAR and a reef octopus skimmer, 5 fish. Alk/Ca uptake is replenished with saturated kalkwasser dosed at night measured by hand. so a pretty standard setup.
A month out I’m still losing corals. Is this all a delayed response to the nutrient swing or am I missing something here? I can’t imagine that stylophora and birds nest are that sensitive. I’ve tried turning down the lights to ensure I’m not blasting them with too much PAR and it has not helped. Only other thing I’ve recently found was some surface rust on my inkbird temp probe. I don’t see any signs of parasites at night or fish going for the corals.
Parameters
Alk 7.7
Calcium 450
Mag 1300
Phosphate 0.14
Nitrate 7.8
pH 8.0
Salinity 1.026
System details - 47g tank, 10 or 20% water change weekly, lighting done by two radion XR15s, flow is by two MP10s on reef crest at 100%, nutrient export by a Tunze MAR and a reef octopus skimmer, 5 fish. Alk/Ca uptake is replenished with saturated kalkwasser dosed at night measured by hand. so a pretty standard setup.