Dam it!!!! I had to erase all that I wrote.
Bottom line. How do you have anyway to know what this guy needs. He has given next to no information.
Ok, I am chilling. I think Urgod is on the correct tract. But the amount of information is not enough.
You need to give way more info-rmation. temps/humudity/PH howq often fed, how much all of it.
But if I was to GUESS, I would also say you threw the PH out of wack, or over fed it..