Yes, the one that is listed here. I use 0TSD RODI water. It's just so strange that it always has bubbles in the dosing lines within 24-48 hours after mixing it. With the sodium nitrate that I'm currently using, no bubbles at all.
for polypes and coral health, I have bad polyps extension despite parameter are in check. I now a coral breeder that had the same kind of problems with millepora and tenuis and he started to add amonium , it helped only a little but when he started to add uree too, all his corals went in a week back to life and showing big polyp extension .all his corals looks better and have better growth. Another friend tried urea also and polyps went crazy. Maybe I should add just the urea? will it also raise nitrate alone?
