What causes polyp bailout besides parameter swings?

[Hurricane Aquatics]

I have pretty much everything you said, my calcium being 450 (tipping the high end) and my magnesium being around 1485 (I've read torches like higher end magnesium?). My nitrates do test around 20 +/- with salifert test kit. I honestly don't know about the flow since some people seem to blast their torches and say "this is good" and some barely and they say "this is good". My phosphates are steady 0,07-0,09 (does not go below 0,07 or higher than 0,09). Yet for some reason all of them seem to sooner or later die. My KH (when it drops to 8) I add some baking soda to amp it back up to around 8.6 -> 4 grams of baking soda does this for me.

I have not measured my PAR, but all my torches are at the bottom of my tank. I have a blue tang and a tomini, could these maybe cause stress when feeding time comes by, due to them causing a massive flow when the swim by? Maybe a bold question, but would you be comfortable to show me your flow or show me your flow schedule for your wavemakers?

You add baking soda for KH raising? Why?

LPS aren't that sensitive to Alk/KH. Simple water changes should keep it in the vacinity for LPS. If you have SPS and polyps, is what this thread was about I believe.

LPS die from the water being too clean, low magnesium, bad husbandry, or flow being too much or too little. Also PAR, if the torch has its tentacles out and flowing, it's happy. If retracted the par is too high.

If LPS is all you have then there's no need to add anything. I would add baking soda and that could very well be your problem. Your Calcium is fine and it doesn't really matter if it gets higher, no concern for alarm. Yes LPS like about 1500 mag.

 

[Icryhard]

You add baking soda for KH raising? Why?

LPS aren't that sensitive to Alk/KH. Simple water changes should keep it in the vacinity for LPS. If you have SPS and polyps, is what this thread was about I believe.

LPS die from the water being too clean, low magnesium, bad husbandry, or flow being too much or too little. Also PAR, if the torch has its tentacles out and flowing, it's happy. If retracted the par is too high.

If LPS is all you have then there's no need to add anything. I would add baking soda and that could very well be your problem. Your Calcium is fine and it doesn't really matter if it gets higher, no concern for alarm. Yes LPS like about 1500 mag.

I add baking soda to keep it around 8.5. in one week it consumes about +/- 1 DkH. I don't think my husbandry is bad (I could write out what I do in the hopes of it clarifying?). The problem with my aquarium is: They're happy, they're all out, they're growing, they're becoming bigger and BOOM. There it goes. One loses some coral tissue and becomes deflated and has this nasty effect on all other corals attached to this base. I have 4 leather corals, a lot of those indo greens and had this morning 6 torches of which 2 unfortunately suffered the above. I can show you how my corals look tomorrow in white-ish light. You'll notice they're happy and in about a couple of days/weeks I'll come back with my tail between my legs saying one died for whatever reason. I must admit I haven't performed a ICP yet, so I don't know how much my trace elements are, but I doubt these are all bottomed out, since I add magnesium etc. with trace elements. One thing I can think of is: Could not having silicate be a killer? I remember I made sure there would be no sillicate in my water.

 

[Hurricane Aquatics]

I add baking soda to keep it around 8.5. in one week it consumes about +/- 1 DkH. I don't think my husbandry is bad (I could write out what I do in the hopes of it clarifying?). The problem with my aquarium is: They're happy, they're all out, they're growing, they're becoming bigger and BOOM. There it goes. One loses some coral tissue and becomes deflated and has this nasty effect on all other corals attached to this base. I have 4 leather corals, a lot of those indo greens and had this morning 6 torches of which 2 unfortunately suffered the above. I can show you how my corals look tomorrow in white-ish light. You'll notice they're happy and in about a couple of days/weeks I'll come back with my tail between my legs saying one died for whatever reason. I must admit I haven't performed a ICP yet, so I don't know how much my trace elements are, but I doubt these are all bottomed out, since I add magnesium etc. with trace elements. One thing I can think of is: Could not having silicate be a killer? I remember I made sure there would be no sillicate in my water.

Sounds good. You can never eliminate silicates 100% in a reef tank as it comes off sand and other things. A good RODI should take care of the silicates from your water which I'm sure it does.

It sounds like you might have some bacterial stuff going on. Yes, I would like to see your corals if you can post the pics. LPS get brown jelly very often and people lose them before they really know what's happening. A good dip in Lugol's Iodine will cure most of those issue as it's antibacterial.

Ifnyou would, post your routine, what you're dosing, lighting etc and I'll have a look and see what stands out. We've all been there so don't get discouraged.