Not sure what I need to do next

[Aquaman6410]

My IM 75 INT is a year and a half old now, started from marco rock. It went through some bad uglies for a while, dinos twice, cyano, some other algaes I have no idea about but I feel I'm on the other side. I lost corals during the bad times but should be good now. Tank has no real nuisance algae I can complain about, I just have to scrape film algae off the glass once a week. The problem is, I keep bringing corals over from my old biocube that I want to tear down but not getting great results. Polyp extension seems to be not the greatest, no real growth, nothing really dying though, just surviving. I do have a bowerbanki receding a bit. There is some coralline, mainly two big patches on the rock and maybe a few tiny spots but no real fast spread. Things just seem off. Fish load is decent now because I kept zeroing out phosphates/nitrates but now they are a little high. Not sure if that can hurt corals or just cause nuisance algae. I tried searching but no definitive answer. I use two XR15 G4 Pros over the tank, Sicce SDC 6.0 at 50% power with RFG nozzles. Only using one MP40 with reefcrest at 25% max. I have two but anything more or using two seems to make some corals polyp extension worse like it's too much. Here are my latest test results. Keep in mind, I have macro algae and AI Prime Fuge coming in a couple days to help naturally bring down nutrients before nuisance algae starts up. Trying to feed minimal in the meantime with weekly 10-15% water changes with TM Pro. I run a Nyos Quantum 120 skimmer 24/7 as well.

Phosphate - 0.26ppm
Alkalinity - 8 dkh
Calcium - 415
Magnesium - 1340
Nitrate - 12ppm
pH - goes between 7.9-8.0 probably due to co2 in sealed house in Florida in the summer. My biocube has always been around the same, in the same room.
Temp - 79f

Are the high nutrients causing the issues or is the only harm in that due to growth of possible nuisance algae that will smother coral. Again, there is no real nuisance algae at the moment. I have an ICP test out as well to get a baseline.

 

[dwest]

I don’t think your nutrients are too high. I would consider moving some rock over and/or sand from your older tank to your newer tank. It seems it takes forever sometimes to get newer systems stable when using non-liverock.

 

[xxkenny90xx]

Your nutrients aren't too high imo (well maybe just a little bit) but if they have been fluctuating alot that will bother corals

 

[Aquaman6410]

Okay, that's good that those nutrients aren't too high. I still plan on implementing a refugium so I can naturally reduce them and keep them in check so they don't keep climbing with feedings. Anything else seem majorly wrong here? I'm hoping the ICP results come in this week. I use a 7 stage RO/DI system from BRS for all water. I don't dose anything since there doesn't seem to be much uptake happening between water changes.

 

[dwest]

Okay, that's good that those nutrients aren't too high. I still plan on implementing a refugium so I can naturally reduce them and keep them in check so they don't keep climbing with feedings. Anything else seem majorly wrong here? I'm hoping the ICP results come in this week. I use a 7 stage RO/DI system from BRS for all water. I don't dose anything since there doesn't seem to be much uptake happening between water changes.

Fuges are great. Resist other methods of lowering nutrients (gfo, carbon dosing, etc). Nothing seems wrong. You are doing good thing. I would surprised if things didn’t turn for the better in the next few months, especially if you move some rock over