New algae: What is it?? Good or bad??

tzylak · 12/14/2017, 11:43 AM

This dark green, uniform in color algae appeared on the lower rocks of my tank. Slowly growing over the last month. At this rate I might have to stop it. Any suggestions on how?

nereefpat · 12/14/2017, 11:47 AM

Looks like cyanobacteria to me. Syphon it out.

If it keeps coming back, look into adding more flow to that area.

More drastic things like blackouts and chemical warfare are an option if it gets out of control.

12/14/2017, 11:43 AM	#1
tzylak Registered Member Join Date: Aug 2014 Location: Oceanside, CA Posts: 457	New algae: What is it?? Good or bad?? This dark green, uniform in color algae appeared on the lower rocks of my tank. Slowly growing over the last month. At this rate I might have to stop it. Any suggestions on how?

12/14/2017, 11:47 AM	#2
nereefpat Registered Member Join Date: Apr 2016 Location: Central Nebraska Posts: 3,190	Looks like cyanobacteria to me. Syphon it out. If it keeps coming back, look into adding more flow to that area. More drastic things like blackouts and chemical warfare are an option if it gets out of control. __________________ Pat Current Tank Info: 125 in-wall , 40b sump. 6 bulb T5. ASM G2 skimmer. LPS and leathers