hi FuEl, thanks for the reply, in this case, need to get more cartons of distilled water from NTUC ...my arm will broke
but one thing i am not sure, since it's 100% distilled water, will it lack of other nature elements which needed by coral? (of course i will dose /monitor calcium, iodide, strontium,.....)
so, what do you suggest, if to compare from the following source of water:
which is reconmended?
1) purely use bottled distilled water
2) buy sea water from LFS
3) use tap water+Seachem Prime
4) mixture of the above
all commend/ advise are welcome