Help needed

[klyve]

i have this problem is that out of sudden i cant seem to keep monti,birdnest and digi. Even those old resident that have been growing very well or new addition they seem to die off.monti and digi will have aglea covered up and my birdnest will STN from the bottom.
but the others of my sps like mili, arco ect all doing very well
Below are my water permeter
KH: 9
CA: 450
MG: 1450
PO4: 0.10
NO3: 10
And this are suppose to be easier sps....Please help...Thanks

 

[krazysps]

birds nest are touchy from my exp. there normally the first thing to show signs if something is wrong.

 

[AndyH5512]

Sounds like you may be experiencing Alk swings. I would also try to eliminate the phosphate and nitrate, too.

 

[Grant W]

Have you made any changes to you normal routine with the tank lately? Any new fish and have you checked for pests? Need more info.

 

[phenom5]

PO4 is high.

The other thing that comes to mind is alk swings. Is it stable at 9, or does it move up or down between water changes? What do you do to maintain you alk?