dinoflagellates?

[LarryZ]

Good morning everyone,

Over the last few months I have been getting this mucus like growth on my live rock on the surfaces that get direct light. I siphon if off and have been doing a 10% water change weekly but I have seen no improvement. It is grayish brown in color with bubbles (I assume oxygen) during the brightest part of the day. The tank gets no direct light from any windows, just LEDs (80% blues and violets, 45% white, 20% green, red, and UV). My nitrates and Phosphates have read 0.0 ppm. Other parameters are good: pH 8.0, Alk 7.7, mg 1170 ppm.

Can anyone ID the growth and any recommendations for controlling it?

Much appreciated!

[Rover88]

Try turning off your blue spectrum and taking a picture again? All I see is rock.

[tjm9331]

I gotta be honest it's really hard to see anything in those pictures. Try taking a photo with just your white lights on so the blue doesn't wash everything out.

How old is the tank?

What kind of flow do you have?

Are you using RODI for water?

This thread might help...

http://www.reefcentral.com/forums/showthread.php?t=1620464

[mcgyvr]

It is very difficult to see any details in those pictures..
Does it look like this..?
http://www.reefcentral.com/forums/showthread.php?t=2659660
if so.. "F it"... like reefkeeper did :)

[LarryZ]

I will try and get some better photos.

[LarryZ]

I got some better photos. Hopefully these will help. The tank is 18 months old but we moved almost 8 months ago though the problem started before the move.

[mcgyvr]

Any chance you use scented candles/sprays,etc.. in close proximity to the tank?

It looks almost like a sponge or more so irregular bacterial growth..

[Shamous113]

+1 to the bacterial growth, a lot of people refer to it as white slime.

[LarryZ]

mcgyvr - no scented candles or anything like that have been used by the tank - at least that I know of.

Shamous - it is very slimy. It has the consistency of mucous.

[sde1500]

Had a lot of that in my tank a while back. I think definitely some sort of weird bacteria growth. Added some bacteria boosters, including Vibrant and it was cleaned up very quickly.

[devimik]

Looks like Chrysophytes. I had them once about 6 - 8 months into setting up my 90g, but they went away with regular water changes.

http://www.reefcentral.com/forums/showthread.php?t=2439205