all of a sudden my torches retracted then a couple days later the hammer and ovtospawm followed. Tested water of course and all is well.... my question is could they be unhappy from being in too clean of water? They have been fine for weeks now this. Phosphates unreadable and nitrate about 10? Any suggestions if nothing has recently changed as far as lighting and flow? how long couldnthey stay like this before meting and dying?