Frag Tank Troubles

Brandon Rush · Sep 10, 2020

So I have a 20 gallon frag tank in the garage hooked up to a chiller. All of my levels are perfect, but still seem to be having issues keeping sps corals. My lps corals seem a little retracted as well. The sps tends to bleach/ suffer from necrosis after some time. I recently was running a lower alkalinity so I slowly rose my alkalinity over the course of several weeks. Not sure if that change caused their demise. These are my current levels below. I'm running a modified AB+ schedule at about 15% intensity on a Radion G4 pro. I have two Mp10's for flow. Any ideas why I'm having such trouble?

Nburg's Reef · Sep 10, 2020

Probably need more info/background:

How old is the tank? do you have pics of the tank? Are you putting healthy frags in? (of they are not healthy, it might be too much of a change to do well). If they are coming from your DT, how different are parameters and lighting? Is there something in the garage that could be tainting the water?

Brandon Rush · Sep 15, 2020

Nburg said:
Probably need more info/background:

How old is the tank? do you have pics of the tank? Are you putting healthy frags in? (of they are not healthy, it might be too much of a change to do well). If they are coming from your DT, how different are parameters and lighting? Is there something in the garage that could be tainting the water?

Sorry for the late reply. I'm really unsure what it is. My mushrooms seem to be doing fine but everything else is still struggling. I run the tank without any fish or inverts so I don't know if maybe it's too clean. Here are some pictures of the tank.