algae

Hi guys - For the recent few months this red algae / bacteria has been excessively growing on my sand and every time i attempt to remove it with a gravel cleaner, it grows back within a week or so. Can anyone please help ID it and if it is my nitrates what is the most effective way of lowering...

Hi all, I have a Red Sea Reefer 250 that has been up and running for 8 months now. My issue is a strange black algae\cyano growth that has plagued me for the last two months+. I have been treating as follows: cleaning gravel twice weekly 20% water changes twice a week Addition of beneficial...

There's gunk on my macro algae. Anybody know what it is or how to deal with it?

Hello. Any ideas what this algae can be and how to get rid of it? this pictures are with filtration turned off, for better seeing. when the filtration is on the water looks crystal clean. It take few days after cleaning and everything is covered in brown algae. i have protein skimmer. 3 small...

Hello Reef2Reef, I have been struggling with a case of killer green film algae (see attached photo) for about the past 4 months. I just can't seem to kick it. So far, I have lost 3 corals to it, and it looks like my large zoa colony will be the next to go. Background My 32g BioCube has been...

Been dealing with this algae for a little bit now and it's just getting out of hand. Starting to grow on coral skeletons even with scrubbing and removing it regularly. Can someone tell me what this is? Having a hard time 100% IDing it. It is some sort of green sheet algae that grows in layers...

I have previously battled with diatoms, I then battled with the below (first pic) - it was suggested to just scrub the rock so I did and it was fine.. But, as you can see in the second photo, I have to deal with this once a week? Not sure what it is so no idea how to treat it... I have just...

Hi All - New to reefing so need some advice. I had initially had what looked like a diatom bloom starting week 3 and faded around week 7. I now have both brown and green algae on the sand bed & brown stringy algae on the back wall (re-appears 12 hours after I scrape it). The green algae on the...

Hi there, I have just started my 25g long nano reef tank. The tank has cycled for 2 and a half months and water quality is great and I have just added a small yellow watchman goby. 1 purple firefish. 1 forestfire branching montipora frag and an encrusting Hollywood stunner frag. (The coral frags...

I'm finding myself using a lot of peroxide now, brushing stuff off with it, and dosing it nightly with the 1mL/10g that's commonly recommended, and it's completely turned my tank around! This feels like miracle stuff! What are the long term implications of using it? I had a horrible...

Need some help with what this orangish brown algae is and how we can fix it..if we need to? Tank is several years old, nothing has been added recently other than water for a water change. Seems to be spreading all over everything..

Hello, Not sure what this is and its all over!! 250 gallon fish only Nitrate 25ppm Alkalinity 9.5 Salinity 1.026 Phosphate .08

Hello, Not sure what this is and its all over!! 250 gallon fish only Nitrate 25ppm Alkalinity 9.5 Salinity 1.026 Phosphate .08

Can someone help me distinguish what this is? I'm praying this isn't the Big D?!?! Tank is a Waterbox 70.2 (55g total water volume). Live rock and sand has stayed with me as I slowly upgraded tanks over the past 8+ years. I do not have a microscope yet to properly identify, but on the sand bed...

I've been fighting bubble algae on and off for about a year now and I'm getting tired of it. I physically remove them with a hose and screw driver and they come back within a week. They detach from rock and end up in my powerheads, causing cascading issues. I'd rather grow GSP because at least...

Could anyone help to identify what this is? It’s covering my zoas and I’m scared it’s killing them! -15 gallon -cleaner shrimp, Randall’s pistol shrimp -pink streaked wrasse, Yasha goby -strawberry conch, nassarius, trochus -3 zoas, 1 leather, 1 mushroom, 1 Xenia and 1 Duncan -tank is 3 months...

I have red algae that looks like a slime coating and also has long hairy strands. Is it beneficial, or should I get rid of it. If so, how? I attached a few photos. Thanks!

I have this in my tank... has bloomed over the course of 2 days. I did have diatoms but my lawnmower blenny solved that along with more frequent water changes etc Does anyone know what it is and how to treat it?

Pretty new to this hobby and I have some algae growing in my QT. Hoping I could get an ID on it and how to fix. Ammonia is 0, Nitrite is 0, Nitrate is 10. Tank is a 30g bio cube.

Hiya guys, I’ve been having a bit of an algae issue in my 15 gallon tank that’s been up and running for 3 months now. Is this just the ‘ugly’ stage? Which snails would be best to get rid of the algae? It’s primarily on the rock and some on the sand. I already have 1 trochus snail and 1 nassarius...

What am I dealing with here guys? It’s starting to take over the tank. Appreciate any help

Happy Saturday (to most). I purchased 20lbs of deco live rock from gulfliverock.com which arrived on Thursday, thanks Dan! I'm loving it so far and I am excited by every new thing I see. If you have seen my other posts you'll notice I'm kind of a name junkie, so as you can imagine getting rock...

So this is my first salwater tank, its a waterbox cube 20, im primarily a freshwater guy but decided to give saltwater a try, now this tank has been cycled and been running for about 3-4 months now, i have this algae build up or whatever it is, its kind of like a carpet if that makes sense. im...

Need help with the identification of this algae both the green one and the purple. Was using tap water but switched to RODI a week ago. Already had brown diatoms tank is two and a half months olds. Ignore the photo bombing cardinal