Algae infection!! (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.

[hotlemond]

did your friend know of his water parameter before the diatom came? Could your measurement be after he had made a big water change?

Was the Rowa changed every now and then base on regular PO4 reading?

your friend are taking steps to fight them so just sit back and observed. Did he provide enough flow now?

[gods_angel77]

hi bro

if u want u can try using AZ NO3.

I'm having a DSB system initial phase of my tank operation i had NO3 of 40ppm after using 2 bottle of AZ NO3 & doing 10% of water change when first started to use the product now NO3 measure 0-2ppm

I don't use the AZ NO3 on daily bassies anymore

However when i perform 10% of water change every 2 months once & i use 2 cap of AZ NO3

So far so good NO3 in control

Use row phos to control PO4 my tank measure 0ppm

Feed moderately

Last but not least best of luck

Cheers

[Reefbum]

High nutrients can't be the source of the infection on fishes.What makes a fish succumb to infection is stress and diet.In your friend's case, IMO it is more like due to stress.What kind of fishes died? And what other LS is there?