actually how sure are u guys about whether u overdose or underdose?? anyway to measure...
the truth is no...trace elements as they are, are not measureable by our normal testkits. u'll probably need to send them for lab test to ascertain the types and amount of trace...
acidjazz, i have a strong feeling tat u might have overdosed...have u check your kh and cal recently?? i've been following your tank thread and noticed that u are just like me, a LPS lover...dun think u need to add anything more than kalk...
some reefers swear by trace elements, others have other methods. i started off just like everyone else, buying watever product that says tat they are the best...and thinkin thru, WHICH PRODUCT WILL SAY THAT THEY ARE NOT NECESSARY?? in the end, i overdosed on trace and crashed my 1st set-up...back then, i dose all sorts of nonsense, from trace to mag, to stontium, kh, cal, kalk and almost all other kinds of available additives...and of cos, i dose them according to wat they recommend...but never knowing whether the recommended dosage is good enough or too much or too little...
in my most honest opinion, for trace elements, the best way to keep them in equilibrium is to change water, our tap water contains all the necessary trace and marine salts also have them..so by changing water, u will never need to fear tat u might have added too much of this and too little of that...because all will be adjusted closer to the natural level...watever needs to be replenish will be, and watever is too much will also be reduced...
for me, whenever i face problems, i change water..fish die, change water...coral die, change water...and the most important rule of thumb for me, don't fix anything unless they are broken...