nuisance algae

Hey R2R! I've been having some issues with this red "hair" algae lately. I've had it in the tank for quite a while, at first it was a slow grower and since the colour is quite pretty I left it be. Lately it has been growing more vigorously and overtaking some smaller LPS frags. I'm aware that...

Hello fellow reefers, I am having a big issue with dictyota taking over my rocks. I had a sea hare that I believed was keeping it under control but they seem to have a tendency to get stuck in my fans over and over. Is there anything out there that eats this stuff? I only have a 65 gallon so I’m...

Setup my first coral QT about a two weeks ago now. I've had my DT running for 6 months now. But I haven't had any lights on the tank, since I haven't had any corals. So I didn't realize quite how quickly nuisance algae can tank over a tank. Especially one that is fresh and clean like a freshly...

I have a 2 year old tank that looks amazing in the morning but by the end of the day each day is covered (not entirely but enough to be discouraging) in a brown-tinted algae of some type that I can’t identify or can’t seem to eradicate. My nitrates are at 2 and my phosphates are at .06. (Trying...

Hey everyone, I had this algae grow in my tank initially thinking it was Bryopsis. However, I'm not sure anymore. When I first spotted it during my water changes, I just sucked it out of my tank. I decided to go all out with Reef Flux for more preventative measures. However, two weeks later...

Anyone ever dealt with curly algae before? I am battling some hair algae as well but this is different, grows primarily on rock and is thicker like a macroalgae. If you have dealt with this before would appreciate an ID and any tips on how you beat it. This is a 8 month old setup still going...

I'm just past my second month with my 15 gallon cube and getting through the uglies right now with some bryopsis and gha on my rockwork and diatoms on the sand bed. To help clean up the uglies, I stocked my tank with 5-6 blue leg hermits (hard to tell what's an empty shell and a tiny hermit...

So a little background the tank is about half a year old now. I have higher than desirable nutrients Nitrate is at 19.5 and phosphate is at .07-.17 (Hanna issues) I have a refugium going below the tank in my sump i do weekly water changes of about 35 gallons. (the tank is a 90-gallon display and...

Please help me id this bacteria on my sand bed and any experience on eradication

So this has been growing in my tank for about a month now, deep green patches, not really hairy or overly slimy, it grows only on the rocks, and it grows in expanding circles like green coralline algae does, except this is a much deeper green than coralline (I've had some of that as well), and...

Anybody know what this might be? I’m thinking that it is Amphidiniums, but was curious what others thought. It’s stringy and some are on the sand bed I think as well.

Hi was hoping someone can help with identifying this algae? I’m having a little algae problem plan on getting more cuc this week. Got a little bubble algae but can identify the rest hoping for some help

Hi all, Can anyone please help identify this algae growing in our tank that has gone absolutely crazy over the last few days. It's like a spiderweb and it's smothering the corals. What can I do to get rid of it!? We have just finished treating the tank for bryopsis and it was looking great...

Hello , I have some serious kh problems over the past 4 months my alkalinity stays above 14 at all time even after wc. But ph is 8.2 My wc water is 8.7 kh And at this point I don’t know what to do or lower it Have tested with Hanna checker dkh Salifert kh Waterbox pen 25 Eheim 75 w...

Ive been having a small outbreak of a Dinoflagellates like algae. Its brown and looks slimy, and as it gets bigger/ longer it producers a bubble at the tip. It grows very fast and I end up siphoning the visible chunks every few days so it doesn't grow over the corals. It seems to irritate most...

Hi there, I seem to be having a slight bloom of algae in my tank. It looks red in my tank which makes me believe it’s cyano but it’s not like slimy, more like hair algae. I have included a picture of the algae under the microscope and what it looks like under white light. Let me know if anyone...

Algae outbreak after getting some new coral. The corals were dipped but it spread anyway. This alage is a brown color. It is long like gha. I have tried using reefflux and chemiclean. I lowered lights, turned off whites. Nothing seems to kill this. Fish won't eat it. I've been reefing for 14...

I used to have bryopsis and I got rid of it using this white medicine powder from LFS. However I can't seem to get rid of this different species and it's overunning the rockscape. I don't have much CUC left and need to get some anyways but if it's bryopsis I don't know if it'll help anyways. I...

So, I went to visit some family for a month and had someone working at my LFS help me with my reef tank. Unfortunately, when I came back to my apartment, my reef tank was a complete mess (probably need to restart potentially). Tank: 32 Biocube Livestock: 2 Clownfish 1 Snowflake Eel (small)...

Hi All, I currently have a 6 month old tank that is going through an algae outbreak. I know this is to be expected in a newer tank, but need advice on what I should be doing to mitigate. I know 0 nitrates and 0 phosphates is not good, but I don't know if feeding the tank more will make the algae...

Hi everyone, So I’ve had this reef tank setup for slightly over 6 months; I had everything transferred in from my old tank 6 months ago, and for some reason I’ve had wave after wave of this algae come in. It’s a think jelly-like substance that’s formed on the rocks and sand bed. They don’t...

Went away for a week and came home to this completely taking over my sump. Protein skimmer working very hard. Used up half my reef mat in 3 days. It feels very slimy and comes apart quite easily. The consistency almost feels like slime around a piece of string, but the second you touch it, it...

Hi R2R Team, I've been battling a nuisance algae for a little bit now. I initially thought it was bryopsis but have tried fluconazole with no luck. I have tried manual removal which will remove the amount initially but always comes back. I have also implemented reduced feeding by reducing total...

I have been battling hair algae for a couple months now. Basically, target vacuuming up from the rock work, but it is getting out of hand due to high phosphate levels. so, I started running GFO in a reactor, but now I have cloudy water. Is this normal?Does this eventually run clear?

What’s up everybody, just have a quick question. I am battling some sort of algae on my sand bed and have been for a couple of weeks now. They are like thousands of little individual balls of green algae, and I can’t find anywhere on what they might be. There is a ton of them and I do not know...