[rdnicolas]

Originally Posted by aussiefishy

KH=250/18.9 = 13.22dKh

1 other question, do you dose any other kind of chemicals regularly? you seem to have such high levels of Ca and dKh at the same time, it is very abnormal, ususally when you hava an elevated level in either Ca or dKh, the other will be greatly depressed.

also, as mentioned by others before, you have NH3 in your tank, that is not abnormal give the fact the most of your livestock were dead after you do testing.

How much pH flutuations do you have between lights on/off?

I've never actually tested my ph in that way before. It normally sits around 8.3 to 8.4 and I
I use Kent ph buffer up twice a week (usually drops to 8.1) when I check the ph and its low, I normally use one squirt of cycle every week thats about it. now I'm wondering if dying bryopsis caused an ammonia spike.... but then again the fish still died after the water change...