algae bloom

Noticed this in my refugium today. Not quite sure what exactly it is? Also noticed this brighter red algae top of my Aquascape kind of suspect cyano for that one. Any thoughts are greatly appreciated thanks in advanced I will update with water parameters shortly.

I have this light pink, hairy algae growing over my live rock, but only on the rock in the shade. I've been looking all over for what this might be, but cannot find any similar photos/threads/posts about this type of algae(if that's what it is). I recently added some more liverock before I left...

Hello, I have a question about my water. My tank is about a year old, everything has been running smoothly for a while now. I changed my AI Prime HD light settings from David Saxby to the BRS AB+ settings, and about 3 days later I got home from work to tank with extremely cloudy water. I have...

I have been trying to get a handle on my algae issues for about, well too long. I am calling in the cavalry because I am at a loss of solutions. I know there are going to be recommendations that scare me, suggestions that undermine my intelligence and news that breaks my heart at some point...

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...

Hi tank has been running 2 month. Never had the brown diatoms but for the past 2 weeks ive had this green algae on the rock and sand. Could anyone identify it for me please and what cause of action is needed if any. Tia

I recently started up my tank about 6 weeks ago and have now gotten this algae outbreak out of no where. It’s brown algae across the rocks and also across the sand which has been a nuisance since it’s constantly seems to come back. I also seem to see a weird haze in my tank but only really...

Hello everyone. I am currently dealing with a problem with my 48 gallon tank. The tank has been cycled for about 3 months now. I have 3 clownfish, 1 anemone, 1 mushroom and 2 acros....Since last week, my tank has been filling up with brown algae and i cannot get it to stop overtaking the tank...

Late in documenting this one but gone from my 5yr 30 litre nano to a 200 litre with 80 litre sump. Built the stand and used a 100 litre tank to build my sump adding 5 baffles. Drilled 4 holes and plumbed in the bean animal style. Nice and quiet! The only noise is at my final baffles / bubble...

Anyone know what I should do in order to get rid of this algae? i had dino’s at first, did a 3 day blackout and now they’re gone but I have a different algae growing. Any idea of what I should do?

Dinoflagellates or diatoms?, brown/reddish with a slimy coat on top, but it doesnt have the snotty bubble tips like dinoflagellates does. What you y'all think?

I'm new to reefing and saltwater in general, and I now have a pretty large algae bloom. I read somewhere it can be caused by something in the water if it hasn't been filtered properly, or that the presence of it also means the tank has finished cycling. Regardless, this led to me testing the TDS...

This bacteria or algae is taking over my tank and making my leather corals shrink. Please help me fix this? Phosphate are zero, ammonia is zero, nitrite is zero, nitrate is zero, alkalinity, calcium, and magnesium all in range. Don’t know what else to do. I have done water changes, changed...

Had a tank crash a month ago as my doser failed and caused Alk swing. Tank is recovering slowly but there is a lot of algae. My cheto is not growing as these algae are growing all over my glass. Will Hydrogen peroxide dosing help? How much should I does? WIll it affect my shrimp? My nitrates...

Hey guys first time posting in here hopefully I can get some answers as I can’t get any in my usual Facebook groups. So basically I started noticing this white “film” all over the substrate one day, I didn’t know what it was but didn’t look like it could be beneficial so I then syphoned all the...

What is this stuff? Tank is little over a year old and all of a sudden got this stuff on the rocks. Coraline gets covered in it then bleaches out and dies. Noticed phosphates 0 ,nitrates 4-5, alk 9, Ca 445, mg 1450. It’s a 40 gallon with 15 gallon sump. Lighting is 16 hours on lit by single...

So I’ve noticed for a while I had some brown stringy stuff in my sand bed, but it never became a nuisance. Recently I’ve noticed it becoming more active and on the rocks. I’m leaving a link to the video I took: Anyone know what this is?

Hey all, I have a relatively new 180g tank (4 months), which finished the initial cycle 4-5 weeks ago. I’ve put a handful of fish in there and have put in a decent sized CuC in there. I noticed this past week that some type of algae has started growing on the sand. Now it’s starting to grow on...

Hi guys I have been fighting this battle against algae for the last 8 months and I can't find a way to make it recede. It has been always getting worse and now it is at the point that the wife is having seconds thoughts about having the tank. I will try to post as much detail as I can, let me...

I thought I’d ID’ed this stuff as Licmophora sp. but now that I’ve let it grow out, I’m not so sure. It’s a brown-ish white looking feather protruding from the live rock in mostly high light intensity areas and emerging from what looks like existing algae. Salinity: 1.025 Temp: 78.6 Ammonia: 0...

Alright ladies and gents. I just started a new 60 gallon aquarium. I currently have a 150 reef tank that I’ve had for over two years. My question is, my tank is cycled, I have a ton of algae. Like at night I clean the tank and scrap the algae and the next night it’s covered in green algae. Is...

Hello, I'M new to the forum but have been in the hobby for some time before quitting and coming back. I started a 20g IM nuvo over a year ago and have been battling with Brown Diatom Hair Algae. When I set up the tank I had (and still have) a skimmer, bio-pellet reactor, cheatomorpha carbon and...

My tank cycled up fairly quickly with respect to ammonia management - about 2 weeks. I cycled with established LR that I got from a fellow hobbyist -- that LR was also established with some Green and Brown HA. (40b with 20L sump; no fish, CuC only, set-up in Mid Sept 2017) My nitrates climbed...

Not exactly new to the hobby, but its been a while... Never had this issue before. 75 Gallon Das aquarium, Trigger system 26 sump, Reef Octopus 110ss skimmer, Microalgea refugium, and as of yesterday a Phosban 550 reactor. Dual T5 Lamps. I got a massive red/green algae outbreak. Nitrates went...