Fir what ever reason I just can't seem to keep montiporas in my tank. I can grow acros just fine and I don't see any pest of any sort in my tank. I even went half a year with no montis and they still tend to die off after a week or so. They're in medium to low light. When I placed some in high they just bleach out. My parameters are Alk-9 Calc 400-420 Mag-1380-1450. Any suggestions??