View Full Version : Need expert: is this red slime?

09/14/2015, 07:08 AM

Should I just go ahead and turn off the light for 3 days?

My settings: 10 gal, 420nm and 620nm blue and purple light. 8 hours per day. Water change bi-weekly. Recently started Kent purple tech and this stuff appeared.

Sugar Magnolia
09/14/2015, 10:03 AM
Yes that's cyano. Syphon it out and step up your water changes to weekly. Are you using rodi water?