Nope. But you guys had some pretty good guesses. Sounds like you all speak from experience lol. I've experienced all those myself, from water pump getting clogged with roots to forgetting to flip the lights on.
This is one of my 7 2x4 tents I also flower in along my main flower room.
The air line was partly plugged in the manifold and barely getting enough air to make any bubbles at all.
Thought the stone was plugged, changed it nothing. Still not many bubbles. Then went to the air pump and and took that buckets hose off and barely had any air coming from it's outlet. I turned off all the rest of the outlets and it still would barely trickle air out.
I have sat a bucket down on the air line cutting off air totally and the plant would be wilted in 2 days with dead roots.
At first I thought it was not enough light or a fungus, did water changes, flushes etc took about a week until I figured it out as no progress day by day.