algae identification

Hey everyone, I've been battling GHA for a bit and got it under control. Then this stuff started popping up. My initial thought was my nutrients swung too far the other way and this has to be Dinos. But my Nerites and Tuxedo Urchin are eating it, so now I'm not sure. It's reddish brown, kind of...

Ive got a brown/green/red slime on my sandbed. Its only on the sandbed, the rocks are completely clear of it. It does seem to disappear or get a lot less visible when the lights go out at night. It clumps together on the sandbed like a mat. It doesnt blow off like dust. I didnt used to clean...

Hey everyone, im trying to figure out if the red carpet algae/bacteria pictured is cyano or something else? Its got the color of cyano but the texture is different its not real slimy and if I mess with the rock only comes off if I scrape the rock will not come off with a turkey baster or...

Hi everyone! Could I get an algae ID on these specimens I pulled out of my system? TIA!

I need help with algae ID for two algae that hitch hiked into my tank. I dip and treat with h2o2. But these made it through. Fluconozol knocked them back but they survived enough to come back. The one is not hair or bryopsis. It's almost like chaeto texture, but it's not chaeto. Let me know what...

I have this algae (or possibly something else) that’s on my rock and on corals. It doesn’t easily blow off and in fact is very difficult to remove. It’s likely not cyano as I just did a treatment with chemiclean and it didn’t help at all. Any ideas and how to rid my tank of it? Lowering...

I’ve been battling algae for a few months now. Life got busy and the algae has been left undisturbed for 2 weeks. I started getting a black blanket over the algae and then today found white spots on the black covering. What is the black covering the algae? What are the white patches? Is it...

Hello all, I would still consider myself new but informed in this hobby. I have two weird growths happening in my tank. One of which is a white/grey fuzz on my rocks and I first noticed it on the bottom of one of my hammers skeleton (not in it or by its head at all)...I asked reddit and they...

Hi, I’ve recently noticed this type of algae growing on my rock work and sand bed but I’m having issues identifying it. I has am appearance of bryopsis however looking under the microscope it doesn’t appear to look like it, I’ve also ruled out green hair algae as I have dealt with it before and...

Can anyone ID this algae/plant ? Crab and snails don’t touch it… just wondering if it’s safe for the tank?

Anybody know what type algae this? And this ok to be growing on scrubber?

Hey guys any help here with some ID. I’ve looked at so many posts and haven’t seen something that looks like this… not sure what to do, my nitrates haven’t gotten over 13 and my phos has always been around .02-0.06 but it just keeps growing…it seems like it grow back over night I’ll brush a rock...

I am month 4 from setting up. Started with new sand and 1/2 new dry rock Other rock was from my previous build and was just in a brute with circulating water. This algae just started to show up. Cleaner crew consist of about: 10 hermits 3 fighting conch 6 nerite snails AWC 2 gallon a day

Today an algae bloom appeared in my coral quarantine tank. This is my first batch of coral frags and my first time setting up a quarantine for coral. The frags and tank have been setup for about a week. I used Biospira to seed the tank and used a fresh mix of saltwater to setup the tank. I'm...

Any thoughts on what these spots are? I'm guessing Lobophora. This is my first tank and my first run in with algae. I noticed the brown/tan spots/discoloration first. But tonight I noticed the black spots for the first time. I'm thinking it's lobo that hitchhiked in with my emerald crab. I also...

I have this greens algae, plucks off easy, doesn’t like direct peroxide. Purple urchin slowly eats it. I have GFO running 0.17 nitrate 0.002 nitrites 0.01 phosphates calcium 400 magnesium 1380 alkalinity 8.2 pH 8.1 and salinity 33 ppt I want to get rid of it as it’s outcompeting my coral frags...

Hey all, I've got a 25 lagoon thats been running for bout 6 weeks now. 2 small clowns, 1 royal gramma, cleaner shrimp, 6 snails 2 hermits. Can someone diagnose whats all over my glass and substrate? It's not bothering the zoas but my gsp isn't opening at all and my golden glove polyp isnt too...

Mods please delete this post, wrong forum.

This is a total victory, it looks like the Carolina algae began not only to grow, but also to reproduce on the acrylic shelf. It's them, isn't it? So far, it is scratched quite easily with my fingernails. I'm happy about that, because I think it's a good sign that I've achieved good water quality.

My tank is being overrun by some brown crud and I am uncertain if it is dinos or cyano of some type. I saw quite a few people posting microscope pictures so I obtaned one and tried capturing a few pictures with it. However while I see lots of cool stuff and many little critters moving around I...

I have had this tank for over a year and a half. I recently changed the aqua scape with Marco rock around two weeks ago. I went on vacation for 5 days and it was white before vacation and now it’s filled with some sort of algae. I had hair algae in the past, so I assume it’s partly this. But...

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...

For about two weeks now I've been struggling with what I believe to be some kind of green hair algae. It's not terribly long and is very difficult to remove manually. My turbo snail has been eating some, but it just grows right back. My tank has been running for 2 months. My nitrates are sitting...

For about two weeks now I've been struggling with what I believe to be some kind of green hair algae. It's not terribly long and is very difficult to remove manually. My turbo snail has been eating some, but it just grows right back. My tank has been running for 2 months. I tried using a...

I have an algae appear that I need help w ID. It grows in a stringy reddish brown growth pattern. Also it may or may not have air bubbles within the algae . It may be clinging to it from my HOB SKIMMER. My tank is 2 years old. Thx