Lildraken, - I can't speak to whether the Cupramine kills off good algae or not as I've been treating in a bare QT tank. Are you treating your main display because you have a true FOWLR without any inverts? If that's the case, from what I understand, even though you have no inverts to be worried about, you will kill off all the life and good bacteria in your LR and sand bed, (and perhaps your algae as you report) so while your display tank can recover from that, it will take time and you'll have to watch your water paramaters closely as without the beneficial bacteria you will likely have an ammonia spike. My understanding anyway..do others agree?
I can report that the "Sera" brand copper test was both reasonably priced and gave the same results as a Salifert test. I finally found a LFS which carries Salifert, but they were out the Copper test, and recommended Sera as another accurate (and more reasonably priced) option. I was skeptical so they ran both tests on one of their tanks being dosed with Cupramine and I saw that both tests yielded the same results. So, came home with the Sera - and at least have no more problems in determining what the actual Copper level is.
We did find out the hard way that the Flame Angel probably cannot handle the recommended level of Copper, as when we dosed according to the Cupramine bottle (which yielded almost unreadable Copper results) the Flame seemed to improve breathing wise, eat and be active, but once we got the proper water test and dosed appropriately to reach the desired .5ppm, the Flame died 4 days later, with inflamed gills. Could it have been the Ich even though it was not at all visible ....sure, it's possible, but considering that in retrospect I remember hearing that Flames (along with Tangs) are overly sensitive to Copper than other fish, I doubt it. Not hard evidence I know, but perhaps something to consider for others treating Flame Angels. BTW, the Blue Throat trigger that we were treating at the same time as the Flame, is now in the display and doing extremely well.
As far as Tangs go - we now have a Powder Blue Tang in QT, and are treating proactively because other Powder Blue's in the same shipment were showng signs of Ich when we purchased him although he appeared clear. He's doing fine at recommended Copper levels so far.
Slider - BTW, you mentioned Red Sea only goes to .4ppm. You may want to consider Sera that reads at 0, .3, .5. 1.0, 2.5 ppm.
Just my 2cents....
Steph
