closed coral

Hey need some help. I have a 15 gallon innovative marine tank filled with a few corals and bubble tips. Now my tank is also filled with hair algae I’ve been battle for awhile. Thursday I removed a good amount of hair algae basically half still got a lot to remove. I had to do a 4-5 gallon water...

Hello! I’m about 3 months into starting a new 90g reef. For several months, I have had a couple soft corals (mushroom, leathers, etc), but recently for the past week everyone has been closed. They don’t seem to be shedding, as they’re all closed at the same time and I know what their shed phases...

Hey reefers, I recently added a zoa and hammer to my 30g tank 2 days ago but my zoa keeps opening a few polyps then closes, hammer looks good. Im currently running the saxby preset, I think at 75-80% intensity, im not sure how to tell, I haven’t adjusted it kept the preset as is. Light is 10”...

Bought my mushroom a few weeks to about a month ago, noticed some weird activity from it acting normal, to not expanding/shriveling, then acting normal. I noticed a purple looking growth going down the side of the rock it’s on for about a week now. I look into my tank tonight to find it...

I got new corals about three weeks ago. Some of them opened up right away and stayed completely open, one of them opened up at first and then closed up and some of them haven't opened at all. - GSP, Yuma mushroom, utter chaos zoas and captain jerk opened up immediately and look great. - Two...

All of my soft corals (mainly worried about my zoas) are closed and will not fully open. They haven’t been moved from their original spots which they were originally opened in, along with being dipped before put into tank, no changes in circulation and parameters seem to be in check. My Duncan...

Hello, I've had my 25 gal waterbox tank for 6 months now. I've noticed over the last month that I've been having trouble with my zoas and gorgonian corals not opening up. Particularly the last week they've been closed. Yesterday I did a 10 gallon water change and still don't see much success...

Hi, Had a little zoa colony for about 2 months as happy as can be, the last week they've closed up in the last week and haven't opened since. All paras are good and my mushroom and frogspawn are fine. I have 2 theories: 1) whatever the thing is in the attached picture is causing bother...

My corals have been looking rather sad for the past 1-2 weeks. Tank: 6-7 months old, 35 gals May 1: Bacterial Bloom. Cleared up and dropped nitrates to 1. They are typically around 10-12 since I mainly have LPS corals. May 12: 5 gal water change and cleaned all the algae off the back wall for...