algae

So I've had this white/brown slime stuff for over a year now. It started as a thin layer of almost slightly fuzzy white slime on the highest rock surface in my tank. Didn't seem much to worry about at the time. It got worse over time, and for the year this stuff has been covering every single...

So I got a microscope because I have been dealing with what seems to be Dino’s on my sand bed. In the video there are these things racing around SUPER fast. Are those dino? If so. What kind?

Hello I have an 250 gallon fowler aquarium it's been up and running for about 6 years well this tank is a year old but the rock and fish were transferred from my last system of 5 years.. this started as a small dime patch a quickly spread. I did add an aqua uv 57 and started to lower my...

Alright boys let’s play a guessing game. I have some pictures and I’m wonder what you all think. I have a microscope coming tomorrow to confirm. DINOS? DIATOMS!?

Hello, I need someone's input. Been reef keeping a while now. But this is the first time I encountered this algae. The tank is a 155g shallow including the sump. It'sbeen up for about 2 months now. I know that diatoms are a thing for new tanks but this is the first time I saw this. it looks like...

So i have this algae that appears slimy on my rocks and kind of comes off in sheets. I was worried it was dinos but doesn't look like that. Under the microscope I see this: Can someone confirm whether or not this is some form of filamentous green hair algae? Just seems super small to be that

Hello everyone! Fighting my first Algae Bloom: Almost no visibility within the tank. Is this harmful to the critters? I was told blacklight can damage certain animals but was unsure. I replaced about 10 gallons of water today and did a 50% change yesterday. Was hoping one of these would...

It grows in small circular spots like this and is hard to scrape off. Only a razor works.

Tank is about 5 months old. Nitrates and ammonia are slightly high but nothing crazy. Are these Dino’s? It did get worse after a water change. My nem seems not to like it very much. What do I do?

I’m not too sure what this is but it’s hard to get rid of. My initial thought was that it’s cyano but after 2 doses of chemiclean it seems to just be getting worse. My nitrates are .02-.05 and phosphates are at .006-.008. If anyone knows what this is and how I could keep it at bay I would...

Hello all. I've been in the process of stocking my tank in the past month or so and had a question. I have a number of different macroalgae in my display and have noticed some accumulation of nuisance algae on their surfaces. My current cleanup crew (Tiger Conch, Trochus/Nassarius snails...

Hello. I've been suffering from excessive algae growth on the glass for about 2 months. I'm not talking about normal green film algae that needs scraping every few days, but I'm getting this strange green "dust-like" algae on my glass that starts to come back 5 minutes after wiping! No...

So I got a new sump after my all in one tank broke (the black plastic part that divides the tank itself and the filtration to the back) nice eshopp nano sump… and I decided to put some chaeto to bring down my nitra, and phos down since they were high .70 and I got a kessil H380 halo algae grow...

Happy Saturday reefers I have a light purple branch algae that hitchhiked on my Feather Duster tube. I read somewhere that Feather Dusters don't like algae on their tubes however, something tells me this algae isn't harmful and perhaps even beneficial. Can anyone shed some light and/or ID? Any...

Following hurricane Helene our 200 gallon Red Sea Reefer XXL 750 has been a disaster. Our tangs died and with that came an insane amount of algae, cyano, etc. (and neglect, given everything). On the plus side, my pest paly’s have been beaten back. I’ve got some healthy planted mushrooms, zoas...

Does anyone know what kinda algae this is? And what I gotta do to get rid of it

So lol. My LFS sold me a dead sea hare. Didn't even bother placing it in the tank, it smelled rotten. So that was the only place locally that carries them. I asked in all the local FB groups if anyone had one in East Tennessee I could buy off of them - no luck. Does anyone in this forum know of...

So basically this tank was set up last 2 weeks ago i transferred the old medias and some of the live rocks from my 55gallons going into a 120gallons and i dont know what are these cause i think it is the reason why my water is a little cloudy because of these microbubbles coming from the rocks...

Hi all and thanks for the great read found in this community. I’ve been fighting with this brown algae issue for a while now, my tank is about 5 months old. Nitrate stable around 15, alk around 7, phosphates near zero but struggling to increase it, protein skimmer in action… not sure what my...

Hello! I’m new to the hobby, and have had my 40 gallon saltwater tank since October 2024. Recently I have had my first algae breakout and am struggling to identify the algae, cause, and next steps. My Nitrates & Nitrites are 0, I have no way of testing Phosphates at the moment. I was doing my...

Hello all, I’ve recently setup the tank of my dreams in my home 2 months ago. This past week, I noticed i’ve accumulated a brown algae that has taken over my whole aquarium. I just ordered a microscope to see what it really is up close, but was wondering if anyone could ID it, or give the best...

I know the pic is fuzzy. Noticed this fella cruising the glass tonight and definitely eating algae. A limpet of some sort I believe. Pretty sure I’ve also seen him stuck to the glass under the sand bed as well. Anyone know what he is and if I should be concerned?

So I noticed this blue squishy substance attached to the bottom half of my snail’s shell. The top is covered in coraline algae. After researching for quite a bit, I am now convinced that it may be some sort of blue sponge.. maybe a plated blue sponge ? Anyone have a clue?

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After some travel (excuse the green on the back of the tank) came home & was looking at my rock & saw these guys?? Any clue what they could be? only have soft corals, snails, herms & clownfish in the tank, but got some corals a few months back from lfs & probably had some hitchhikers, help would...