brownish algae on sandbed (S.O.S)

[daryl]

Hi folks, recently a friend of mind have diatom algae on his tank and his tank is already 2-3 years since started reefing hobby. I measured ALL parameters including P.H and phosphate but the reading seems alright Since brownish algae infection he has been performing 20% of water change instead 10%, also filters were changed weekly and ROWA phos were also replaced just last weekend together with AquaPharm activated carbon when I helped him to change water. Presently skimmate oozing out from his 32" beckett is brillant and he had reduced his 150W MH lighting period from 8-5 hours currently. Worst of all just 2 days back fishes in his tank were infected with white spots and since then 3 fishes were dead I am suspecting high nutrients in the tank but is there a way to trace them? Exactly how is it to maintain and have an excellent water quality tank? Any experts here can share their knowledge with me so that I can advise him what precautions to take in future.

[weileong]

Bro, ich don't just appear out of nowhere, he must have done something to cause the outbreak.

http://www.sgreefclub.com/forum/index.php?showtopic=37105

What parameters did you measure and what were you reading?

Did you realise for one question you posted 3 very similar post?

2-3days to kill the fish? Sounds more like velvet than ich as ich don't kill so quickly.

Insufficient information, you said diatoms just appeared suddenly but what did your friend did before that? Maybe he using tap water and that cause the problem?

As usual I ask for photo of the setup

[alanseah]

maybe you should also take note that no putting anymore fish in until the ich is gone..