Purplish red algae

slider101

Member
I have starting to get this purplish red looking algae on my LR. Started with Diatoms and then started to get some fine hair like green algae that my hermits love. What is this purplish red stuff? Is it good? Is it coraline algae?
 

saltn00b

Active Member
cyanobacteria. try some searches for cyano
there might be a large thread in the FAQ on it i think
 

saltn00b

Active Member
thats because cyanobacteria is latin for "blue-green" bacteria, often called blue-green algae, the most abundant life form on the planet. it however is a misnomer, because it comes in a wide spectrum of colors. most often a purplish brownish reddish coloration appears in fishtanks.
are you searching google or this site?
 

slider101

Member
Originally Posted by saltn00b
http:///forum/post/2878452
thats because cyanobacteria is latin for "blue-green" bacteria, often called blue-green algae, the most abundant life form on the planet. it however is a misnomer, because it comes in a wide spectrum of colors. most often a purplish brownish reddish coloration appears in fishtanks.
are you searching google or this site?
I searched both. Found some pics on here about it and mine looks like that. What do I do to get rid of it? Is it bad or good? I don't have a big outbreak of it yet.
 

saltn00b

Active Member
there should be countless threads and advice on how to do it, but the short of it is:
check your water params,
you want zero ammo, zero nitrite, and as close to zero nitrate as possible
-fix with refugium, less feedings or less food at feedings, LS instead of CC bed, water changes
what is your PO4 at? you want as little phosphate as possible
- fix with refugium, less food, better food (less frozen cubes), water changes
more overall flow inside the tank
smaller photoperiod
 

slider101

Member
Originally Posted by saltn00b
http:///forum/post/2878458
there should be countless threads and advice on how to do it, but the short of it is:
check your water params,
you want zero ammo, zero nitrite, and as close to zero nitrate as possible
-fix with refugium, less feedings or less food at feedings, LS instead of CC bed, water changes
what is your PO4 at? you want as little phosphate as possible
- fix with refugium, less food, better food (less frozen cubes), water changes
more overall flow inside the tank
smaller photoperiod
My ammonia is 0, nitrites 0 and my trates are around 10 ppm. I don't have a test for Phosphates yet. I like my cc bed. I have 1600 gph water flow from my Koralia 1 and 4.
 

big

Active Member
All good advice....... Do get a phosphates kit and check it. With your current PH's one would think not a flow issue, but cyanobacteria tends to start or form in low flow areas and then spread.
A change in the locations of your PH's to eliminate any still spots may help. Maybe adding a #2 or #3 would help in eliminating any spots it tends to start forming in.
If what you are seeing is the start of Coralline on the rocks, try using a Turkey Baster to blast it off. If it is Coralline, it will not come off with the blast of water from the baster. If it does come off it is cyano.................... Warren
 

slider101

Member
I haven't gotten a turkey baster yet to try that but this stuff is looking like a dark red and kind of hairy and stingy looking.
 

slider101

Member
Originally Posted by big
http:///forum/post/2881378
Stringy stuff would be cyanobacteria, not coralline.
Ok thanks. I have some stuff that is stringy and other stuff that is kind of a purple but it looks like it is stuck to the rock, almost like the rock changed color.
 

nordy

Active Member
Originally Posted by slider101
http:///forum/post/2881415
stuff that is kind of a purple but it looks like it is stuck to the rock, almost like the rock changed color.
This is probably coraline algae, which is a good thing.
+1 on what saltn00b said-it's basically covering all bases on what the cyano needs to survive in the way of food, light, and minerals. Get those corrected and the cause, and not just the symptoms, of cyano growth are dealt with.
 
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