Has anyone heard of a nitrate remover from PRODAC called simply "NO NITRATES". They are an italian based company and i picked some up to trial in my tank from my local store who are a reputable store who have all the big name products and seemingly some lesser named products too. I've never heard of PRODAC. Theres probably similar products on the market but i'm wary at this point. If products like this were any good why don't we all use them and limit our regular partials to, well, not so regular partials. Are they designed to limit partials or are they to be used as part of your regular water change agenda. Anyone got any ideas?