black diatoms?

[akbuuur]

hey guys, im getting this wierd black diatom junk and its really disgusting looking. i have corals in my tank and i have been doing water changes to help with this nasty out break but im not sure what to do... any help please?
Thanks
Akbar

[andiruleu]

more flow of water.

[akbuuur]

i have a mag 5 as a return, a maxi jet 1200 and 2 aquaclear 20's as well as a magnum 350 in a 92.. how much more do you think?

[akbuuur]

i had about 1397 GPH earlier today, i put on another overflow box i had laying around and a mag 5(the overflows i have are each rated to 600 GPH so now i have 1897GPH in a 92 gallon tank
hopefully it helps out

[junglejim83]

dont only look at how much waterflow but if its getting to all areas of the tank. make sure there arent any dead spots.
Jim

[akbuuur]

good call