alagae

Does anyone know that these things are? I think the one in the sand might be Aptasia but I’ve never seen in in my tank before. And the other looks like hair algae almost but idk what the saltwater term is? Any help is super appreciated

i’ve noticed this algae I believe starting to grow in a couple spots in my tank. Wondering what type of algae it is. Is it an issue or ok. Never see it before innky tank i did increase my light schedule recently.

Trying to ID what this is. Growing on my tank racks at a staggering rate. Diatoms or Dinos perhaps? If someone knows exactly what it is, I would be greatful for the knowledge.

Hello to all, I have a 2 month old 10 gal tank with soft corals and a small clownfish. I had some algae that I was allowing to grow and it started dying off. I tested and nitrates slowly went from 10ppm to 0pmm in less than I week. I believe that now dinos are showing up (thats why I preferred...

Hello, just got back from a weeks vacation and came back to this. I have no idea what the dark spots on the sand bed are. Also, the slime-looking algae on the rocks. This tanks is coming up on 3 months old and I have done water changes biweekly now since the tank was cycled. Is this just a bad...

Good evening everyone, So I had installed a reef octopus algae reactor and it completely stripped my phosphates away (0 is what hanna phosphate URL says) Would it be okay if I didn't turn the light on, on the reactor every other day but keep the pump running so water flows through it.

About a year ago I made the mistake of buying a problem tank off Craigslist because it was a good deal (no extra charge for the algae). I’ve been fighting it on and off since. I’ve had bubble, hair, dino(I think) and most recently a red/purple one (red slime?) Also, my coral is clearly not...

Hey all just need help first big event in my tank I’m not sure if it’s dinoflagellates or Cyano need help

I have started reef tank 3 and half months back used Live rock to start a Nitrate cycle Now my results are all ok And many people told me that my cycle is completed I have 2 fish and they are all doing great i introduced 2 corals 4 days back so far they are doing great but i have one...