help on my 90 gallon

Jorge-al · Jan 23, 2016

hello guys i currently own a 29 biocube all in one system my tank is doing amazing, my mom felt in love with it and we decide to make her reef tank, her tank have been running for about 6 month now is a 90 gallon tank, everything is doing fine but corals, so the problem I'm having is i have a few corals that are not doing well but other are doing amazing for example i have Flavia coral which is doing amazing,xenia,candy cone coral, buble, and brain corals, but i have other which are not doing that good my zoanthids keep dying, and i have a ricordea which is always close, my anemone is closed too,and i also have a torch coral which is closed too ,this have been going on for about two weeks now , my parameters are good no problems with that my temperature is in 78-79, i don't know what going on i have done 30 gallon water changes and still they won't open up.

Current Tank Info: 90 Gallon DT || 29 Gal Sump || Reef Octopus 110 Skimmer W/Mag 9 Return|| 2 Koralia 1500 w/Wave Maker||2 165 Watt Chinese LED's||
i really don't know what the problems is i would love to see if you guys can give me an advice on what to do thanks for your time.

bobman · Jan 23, 2016

Would need to see actual numbers on water params. I know you say they are good but whats good for some coral is not good to others and all params are fine means nothing to mean. What is fine by your terms may not be in mine and you might not be testing for something. The skimmer IMO is a little under rated for that size tank but is a good skimmer so it should be fine. You seem to have decent flow you might just have to coral in either to much or to little flow. Do you have a pic of said tank and corals might help to see placement.

Jorge-al · Jan 23, 2016

Nitrate 0
Amonia 0
Alkalinity 11
Calcium 400-420
Ph8.2
Phosphate show 0 but i dont think so because im having a hair alge problem
And wverything else show 0
Tmw i can post a few pitcures

Justiful · Jan 23, 2016

Is anything disturbing them? I have a cleaner shrimp that likes to steal food from my RBTA and crawl on my leather looking for scraps. They close up when he does this. Maybe someone is harassing your corals?

dmort · Jan 23, 2016

How bad is the hair algae problem? A picture would help. And, like you imply, phosphate can be deceptive since it can get taken up quickly by algae, leading to a false positive.