Sorry to see this guy struggling so much. You're the only one with in person view to make adjustments. What ever it takes to get it to stay inflated. Priority #1. One day of low light is nothing more than a storm in the reef, or a cloudy day. If you feel ramping it up will help, do it. You're only one day behind strong lights, right? Are you able to make fine tune adjustments during the day, dependant on it's reactions?
Got to get it to stay inflated. The window is closing. If it deflates with lights on, I would kill the lights. If lights come on, and it does not inflate, I would increase lights. Need to find where that guy's needs are, and I have a feeling their needs are on a sliding scale dependant on too many other things that go on, or have gone on.
I've kept them alive for over a month, with a gapped mouth, when I knew they were good as dead. I used a power head on a wave maker to be the "internal pump" to inflate it. It would puff up, look great (with open mouth) then slowly deflate. Ultimately it died, I pulled the plug, but was interesting to watch. Would have kept going. The insides were almost all gone, it was nothing but a shell with tents. Makes me wonder, if we need to think of them as 2 things, outer shell, and inside guy that's fed from hitchhikers (algae) from the outer shell. I also wonder, if hammering with strong light in the beginning, algae makes oxygen with light, right? Maybe it raised the oxygen level too high, (maybe internally oxidized?)it deflated, kept making high oxygen with dead/rotting material, just makes things worse... Who knows... That's my thoughts as to why I kill the lights if they deflate during light cycle. Not sure if I'm right, or way off. No one else seems to be coming up with anything though....
side note, IMO, the water has quite a lot of stuff in it, and I see snot strings in there at times too. I always make sure I get all the stuff out ASAP.
The smallest korillia works great. THat's what I use too.
I also think that radion comes with some really big LED's, not the little 3 watters I'm using, or that come in the par lamps Minh's using. Next round, I'd get a different light.