Hello to all. i have a big problem with my tank, for the last 2 years i have always the same problems. or that the tank lasts 6 months max one year, after it crashes. the symptoms of the corals are always the same: burnt tips, animate it that become dark, gray does not defile and the fabric flakes off .. I state that I have always had dsb. lately my values are not very stable.
with dsb I didn't always have po4 at 0.18 and they didn't go down. so I decided to remove the dsb and start zeovit. my volume is 1200lt. I used the old rocks and the same water. po4 0.18 no3 10 2lt zeovit flow 500lt. some acropora are very dark and others very light, the lps are almost transparent. I believe there may be two problems; - sea water (always used sea water) which brought me a pathogen that devoured the good bacteria. - lack of nitrogen and organic. I can't figure out how to move to resume the situation. in my opinion there is a bacterial problem an imbalance. how can i fix? thank you all.
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