nuisance algae

Hi guys, I've been reading this group for many months.:) 6 weeks ago I started my cycling of a 43 gallon tank without fish and with dry rock and live sand. There is no longer ammonia or nitrites and nitrates are at 100 ppm (Red Sea) and phosphates are barely detectable, 0.01 (AF) or zero. For...

Hi, Need help ID'ing this nuisance algae in my tank. It starts as a small round bump, then appears to start growing a stalk/stem. It is a light green/yellow color and can apparently grow with next to no light as its inside of caves in my rockwork. Please help! I'm thinking maybe bubble algae...

Yeah, I got no words here, it seems to have sprung up randomly (like all the worst algaes do) and didn’t appear near a frag or anything, what is this? Is it some sort of super-cyanobacteria? Will it harm my corals or snails? (I’m afraid the latter would probably eat it regardless) And most...

Recently started with this algae on my glass. It began as a thin, dust like covering but has since also developed this lightening strike like pattern. Tank is a year old and has been completely stable, with nothing added since some gsp back in March. My parameters were n03: 10 and p04: 0.01 but...

What is this that is taking over my tank!? These are the best pictures I could get with my son’s microscope. But I figure someone out there might be able to I.D. what it is…. At first I thought dinos or diatoms because they came back worse when I cleaned them and did water changes. After...

Tank is 6 months old. 65 gallon with 20 gallon sump and about 40lb live rock, 40lb live sand, two black phantom clown fish, two Bangaii Cardinals, one Tail Spot Blenny, one Royal Gramma, 2 peppermint shrimp, 3 hermit crabs, 10 turbo snails, 2 nerite snails, 2 cerith snails, 3 zoas, 1 radioactive...

Hi all, Wanted to see if folks knew what this stuff might be / associated with. These started appearing more and more in the tank over the last week ... No major changes in tank or water chemistry. No additions to the tank. pH 8-8.2, alk 9.8dKh, calc 430, nitrates around 5, phosphates...

Many of us with refugiums and macroalgae use Vibrant occasionally to tackle a troublesome nuisance algae outbreak. You're supposed to take your macroalgae out before you dose Vibrant. However, it's unclear (at least to me) how long after last Vibrant dose you can put the macroalgae back in...

Hey guys I need some help identifying 2 different kinds of algae in my tank. Here is some quick facts on my tank. Its a 75 gallon mixed reef only 4 months old but all of my corals are doing well. 2 months in I noticed what I thought was hair algae but now I'm not so sure. Its rapidly been taking...

Alright, hopefully the video provided a bit of a light-hearted intro to a not-so-light-hearted topic of discussion....Dinoflagellates!! I know this topic has been beaten to death, however since I gather that it is probably the #1 discouragement and source of abuse for those unlucky souls who...

Hi all, my tank has been running for about 2 months now and in the last couple of days I have had an outbreak of algae. At first I thought this was just the diatom stage as I haven’t had any yet, but I notice some stringy down bits growing on my rock today. This stuff is growing really rapidly...

So I had a green hair algae outbreak, then an ammonia spike, I dosed kordon AmQuelPlus ammonia detoxifier, it kills ammonia nitrite and nitrate, and chlorine. Things started to bounce back. I lost 2 cyphastrea, and a birdsnest, during that ammonia spike, it went to 0.50ppm. my xenia has been...

The tank is about 4-5 months old now and I can tell that the water parameters are becoming extremely stable with no fluctuations. I am starting to see purple/pink spots all over my rocks which I assume is coralline algae. The rocks are still super green and slimy though which I was told is...

Ok, so I have a 15 gallon with a clownfish, royal gramma, cleaner shrimp and cuc. I was having bryopsis issues, got rid of that but now I have green slime algae and red cyano in full force. Lights run from 10:00 to 9:00. I feed the fish every other day and reef roids once, maybe twice a week. I...

Im running into a contradiction with my new tank. It's been up since June. I'm using a skimmer, a fuge, and filter socks. My filtration has done a great job of exporting nutrients, too good in fact. Both phosphate and nitrate are 0. They are definitely not truly 0 as I do have some algae, but I...

Hello there I have some new type of algae (or so I think) in my tank and am looking for some help sorting it out. this is a 30g tank about 8 months old, it is a mixed reef in the early stages. theres been a few changes recently that may be a part of the problem. My corals were not growing much...

Hi Guys, Recently cycling my tank upgrade, and I had a wave of diatoms, which now seem to have turned into some kind of hair algae that does not stop growing! I have a 650L tank and my CUC consists of the following: Nassarius Snails, Hermet Crabs, White Spot Urchin, Chalk Goby and Watchman...

Hey all, Looking for some help identifying what's going on in the attached picture. I added my first corals about a month ago and while I'm getting new growth, I'm having a bit of an algae issue, especially on my zoas. It started off as a bit of what I assumed was just green algae on the frag...

Hey guys, I have Cyanobacteria, pretty positive, as it consistently creates mats of algae on my sand bed, rock, and corals. It’s more of a clinging issue to my zoas, urchin, and rocks. It appears red and won’t stop coming back. I have tested my parameters to 0 nitrates, ammonia, phosphates...

Help! I have the stuff in the picture I attached here. Gelidiopsis seems to be the closest species to it i can find mentioned anywhere, but I don;t think that's what this stuff is. I have not yet found what eats it or how to control it. It's in a flat with Yellow Tangs, a Tomini Tang, a...

Hi can someone ID this algae please and let me know what eats it. It grew in conjunction with bryopsis butI am going to get reef flux for the bryopsis soon. This algae though is almost like chaeto but definitely not chaeto as I have a small refugium with chaeto and it’s not the same. If I look...

Hey guys! Been a huge fan of R2R for a while now and thought it’s time to start documenting my tank on here. My system has been up and running for a little under a year and a half now and has recently been suffering from multiple issues (most of them being a direct result of stuff I did ). My...

hi everybody, i’ve been battling dino’s for months now. here’s the story. i bought a tank (40B with 20gal sump; custom tank/stand/sump) that was running for a bout a year and taken down because the owner lost interest, but he put the live rock in a couple 5 gallon buckets of salt water to...

What is this? I get so many different answers. Cyano is my final analysis but is it that. Should I get more snails? Which kind preferred? Also should I change the salt that I use? I get it from my LFS.

Hi all, engaged in a months long battle with this junk. Is it GHA or something more sinister, because I have tried a ton of things to rid myself of it. (Fluconizole, blackout (terrible idea btw), no white light, 0 nutrient tank, algae scrubber, carbon dosing, manual removal, tangs/algae...