tank crashing?

about a month ago i moved. i did what a mover link said to do. im starting to have corals dieing but myzoas are booming. before i moved i had MH lighting now i have T5. could that be the problem. prams are good meaning on the money. im adding 2g of water weekly from evap. dosing will be something u will ask and i dont see why when everything is doing fine. fish and invert are doing great. i did change the sand when i moved and i also have a sump. any ideas? planning on making a frame for my lighting so i can use my MH. plz help save my tank.

 

What type of corals are dying? what was your MH set up and what is your current T5

 

Did you reuse your sand?

 

sorry to hear about the issues

I know you say parameters are good, so I assume you tested ammonia and nitrites?
as often in cases like this it is what is commonly reffered to as a mini cycle ( move created conditions that manifested in some die off , and also loss of some of the bacteria
which cannot immediately keep up with bio load so you get low spikes on ammonia and nitrite that do not last long, but can cause issues for the livestock in the mean time)

its possible that the spike was very short lived and thus nothing registered when testing was conducted - which is often conducted as a result of inhabitants showing signs of problem (in other words, by the time we set about measuring , the peaks have dropped and the only signs they existed are the corals showing distress as a result)

its typically the more sensitive corals that show 1st signs of issues, hence your zoanthids are doing great and the conditions failed to bother them for any lenght of time

are you running carbon - becuase the greatest danger to the corals are the other corals releasing substances as a result of their problems
I would consider adding a polyfilter in addition to carbon if they are available to you
as one of these can also remove contaminants from the aquarium and as such reduce the possibility of other corals being negatively affected

you say you added new sand - I assume from that you discarded the old sand - as its often disturbing a sand bed, that creates these mini cycle/ nutrient spike issues


good luck with it

 

the corals are lps and i didnt reused the sand.

 

i forgot to add that im useing carbon.