nuisance algae

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...

Recently, this pink/purple foam thing started overgrowing zoas in my zoa garden. What is it? What eats it or removes it aside from manual removal? Here are photos of it on zoa frags I removed to clean. I'm thinking it is a sponge. I have been removing the impacted rocks and frags and...

Hi. I am having a persistent diatom problem. It grows mostly on the rocks, in thick beds that grow back within a few days of removal. My water change schedule is 25% change per week. I use RO/DI water always at 0 TDS, after being ran through two DI canisters. I am on well water that tests around...

Afternoon reefers... I upgraded my Fluval Evo to a 60 gallon long AIO back in August when we moved to a new house. I battled nutrients and algae (every kind) over the year that the Evo was running, mostly due to the fact I was new to reefing and made ALL of the rookie mistakes, some over and...

I recently switched lights - from one black box to another on my 40G Breeder. Since the switch - approximately 3 weeks ago, I am noticing a persistent growth of algae on top of rocks. The algae is easily removed with brush... I am working to reduce nutrients with regular W/Cs bi-weekly. My...

I just can't get this algae or cyano bloom to completely go away. I thought it was cyano, but it doesn't create "sheets" like typical cyano pictures. I let it go for a week without blowing it off rocks and the back wall and then cleaned the tank thoroughly. Ive been doing 20% water...

Dinoflagellates or some other algae type? (Pics attached) Tank Info: 30 gallon softie reef 5 months old RO water Salinity 1.025 Ammonia 0 Nitrite 0 Nitrate 1 Calcium 440 Alkalinity 8 Phosphate 0 (according to API) I plan on getting a more accurate kit for phosphates

What benefits can macro algae provide to a reef? How do you outcompete nuisance algae with macros? What's the difference between micro and macro algae? What's the best lighting for specific species of algae? What signs will tell you that caulerpa is about to go sexual or that different algae...

Hi, I recently sprayed peroxide over a live rock to rid myself of some algae. It worked really well. Now, I see some bubble algae growing in on my clove polyp and blue sponge rock. So two questions: Will peroxide kill bubble algae? Will peroxide hurt the sponge? Thanks! Cheers, rant

Hi guys! A couple months ago I set up a 75 gallon reef in which I used a few rocks from the previous system to add to the new display. I must have brought bryopsis to the new tank with the old rock. Today, my tank has quite a few patches of bryopsis on the sand bed and rock. I have been dosing...