BTA Not Looking So Good

[madducks42]

I picked up a BTA in August from a local fish store and it looked great up until this month. We've made three changes to the tank. We started running carbon because it seemed like we had some chemical warfare going on and lost some fish and a torch coral. We also started using Red Sea Coral Colors to add some trace elements. And I've slowly been increasing the light intensity. Since we started running carbon all the corals have been thriving and the fish are happy. But the BTA still looks terrible. It never has a gaping mouth but it spends most of it's time looking deflated and it's color is dull. Some tank info:

Ammonia: 0
Nitrites: 0
Nitrates: 5-10
Calcium: 400
Alkalinity: 9
Magnesium: 1300
Salinity: 1.026
Temp: 78
PH: 8

All those numbers are current and they've been stable. We manually dosed for a while and then setup a dosing system but we've been obsessive about checking the water parameters so there haven't been any major swings. For lights we have two Hydra 52's. They start to come on at 10am and go off completely at midnight. The high point of the day is at 3pm at which point they're at 80% blue/purple and 40% white/UV, I don't use the green and red spectrums. By 8pm they're basically off, they run at 20% blue which gradually goes down before completely shutting off at midnight. The BTA is on a rock that sits at the bottom of the tank. Is it possible it's not getting light? Too much light? It has never moved from that rock so if it's not happy with the light or flow I don't get why it won't move...

Here's a picture of it in it's sad state. It's mostly hiding but I'll post another pic when I get home if it's out more.

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[madducks42]

Here's a picture of it this morning. This is basically how it's looked for the past month. It never opens more than this. The color is a little bit better than the picture shows, has more pink to it.

This is what it used to look like.

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