Too much calcium too fast?

[lowcountry1]

I have been try

 

[lowcountry1]

ooops! hit enter too guick which goes to show you my problem! I have been trying to raise my calcium level to 450ppm for several days and it seemed to be staying the same so tonight I added more but decided to "dilute" it in water first. After mixing it in a cup It was fizzing and popping like alka seltzer...well, I poured it in slowly any way. Wow!!! white cloud and nothing was visiblen not too smart I know. After about an hour everything looks clear and the calcium is reading right around 450 HOWEVER, little isopods(?) are floating around dead, hundreds probably. I am keeping my fingers crossed on my clown, shrimp, snails and hermits. any idea what happened here besides my stupidity?

 

[Jasonf08]

sounds like you raised your calcium without having balanced alkalinity to allow it to be absorbed.

 

[lowcountry1]

Possible I guess, everything seems fine 24 hours later. Ph level, etc..made me a little nervous for a few but all is good now. Thanks