[danny zubot]

This is all just a recent discovery for me, but looking back to when I dosed in the past, I recall observing the same effects. My tank levels have been very good since I set up the new tank at the begining of May. They haven't strayed too far off so when I adjust it is never more than a minor change. When I added a small amount of strontium to the water last week my toadstool closed up until yesterday. After reading some of the material in this thread I see no need to add strontium anymore.

I went out and bought a general trace element suppliment the other day, which contains small amounts of many elements, vitamins etc. This will be good enough Im sure.