Thanks for this fascinating thread. It is an area I'm researching to improve my tank. I've use activated carbon just because I thought "you had to". I suspected it might strip other elements (trace etc).
May I ask a stupid question? By references to carbon dosing, are posters referring to vodka dosing and similar?
Was also curious if posters here feel that iron supplements to scrub out phosphate (like rowaphos and others) might also bind up other more useful elements?
I personally control nitrates by use of a deep sand bed (DSB) I also have a large sack of carbon that I am thinking of removing to "see what happens", and if not wholly positive replacing with a smaller one.
My brains, turbinaras, polyps and montis do well, my stylos grow slowly but I struggle with acros. Seeing similar slow browning on those.
I have very over rated skimming, and am thinking to rely more on that and the skimming, remove the carbon and was considering very light vodka dosing. Need to read up more though.
Thanks for the pearls of wisdom!!!