Cannot get rid of cyano!

[Cal_stir]

Turn your filtration back on after 24 hrs(except skimmer), keep the air stones running.

Be ready to start daily 20% WC after 48 hours, run fresh carbon, it will take 2 or 3 days before you can run your skimmer.

[MarkoD]

i find it very strange that some of my corals are dying through all this and some seem to be thriving

[RedCoralEdmonton]

With everything I have heard, and by all means this is just speculation, but is it possible that with your new flow, that there isn't a proper exchange of water from the bottom of the tank to the sump? I know you have MP40s now, and they are great but you still need some movement up and down, I do this by directing the returns downward... food for thought.... couldn be why some corals are reacting harshly because they arent getting the oxygen provided by the sump? Feel free to give me a call Marko if you run into more issues....

Steve

[MarkoD]

Originally Posted by RedCoralEdmonton

With everything I have heard, and by all means this is just speculation, but is it possible that with your new flow, that there isn't a proper exchange of water from the bottom of the tank to the sump? I know you have MP40s now, and they are great but you still need some movement up and down, I do this by directing the returns downward... food for thought.... couldn be why some corals are reacting harshly because they arent getting the oxygen provided by the sump? Feel free to give me a call Marko if you run into more issues....

Steve

i have no idea. i just cant see there being issues with flow. i get mini sand tornados rising from the sand when the powerheads speed up.

also one of the corals that i pulled out that was dead was an sps that was 6 inches from the top of the tank it was good this morning and now all white

[MarkoD]

heres a video showing how much flow i have on the sand bed.

and notice the patch of cyano right infront of it

http://www.youtube.com/watch?v=V-bjM5uN_eo

[RedCoralEdmonton]

did you dilute the chemiclean before you put it in the tank? possible that some touched that coral?

Steve

[MarkoD]

Originally Posted by RedCoralEdmonton

did you dilute the chemiclean before you put it in the tank? possible that some touched that coral?

Steve

I diluted it and poured it into the sump.