Placing Trachy, Scoly and Wilsoni

[DmitryB]

*le sigh*

So not having any luck with this Scoly and Trachy. The Trachy remains all tight. I placed it into a very low light place and still nothing. I'm also concerned it's starting to die off with algae growing on some spots?

The Scoly - is a Scoly supposed to "open up?" Or does it stay close to its rock/disc?

 

[Evil1]

How old is your tank? Parameters? Flow? Let’s see a full tank shot showing where they are placed exactly. How long have you had them

 

[DmitryB]

How old is your tank? Parameters? Flow? Let’s see a full tank shot showing where they are placed exactly. How long have you had them

The tank is about 6 months, so it's new. I did PAR readings. I initially placed both pieces in the Front Right corner. Then after a couple of weeks I moved the Scoly to the Back Left corner. I have the Orca go into low flow when facing that corner.

My water readings as of two days ago:
ALK 9.1
pH 8.3
Phosphate 0.1
Nitrate 6.5
Temp 77F
Salinity: 1.025

 

[Evil1]

I really don’t see an issue with them. Mine only open after lights out. An hour or two after light out I would spot feed any type of shrimp with a turkey baster at least once a week. As far as par and circulation a I keep mine on the sand bed under full light (par around 150 to 250) and getting enough flow to very gently keep the coral clean and a little movement of the flesh.

 

[DmitryB]

The Scoly does seem to be doing better. I'm less worried. It came mounted to a small rock. How does it grow? Does it need to be on a bigger rock or just give it room around to spread out on the sand?

 

[EnterName]

With activated carbon, I was told it can be a contributing factor in Tang head-hole disease thingy. So I shut off my carbon!

I believe you mean Jay Hemdal's article?

The big risk was unwashed lignite carbon which is soft and dusty. Extruded pellet carbon appeared much safer in their tests. No fish showed visible lesions during the study, only a lab fund microscopic lesions and 2 fish got minor lesions a few months after the study (possibly unrelated). I would say having extruded pellet carbon in a tank for a limited amount of time is okay, but you should rinse it thoroughly.

I have a yellow tang and ran extruded pellet carbon without visible issues for shorter periods (often only 2 - 4 weeks). I can't prove it didn't get microscopic lesions, but I wouldn't avoid carbon just because you have a tang.

Anyway, GFO is ferric oxide (Fe₂O₃), not carbon (C), so the study doesn't apply to it. I have used GFO and also aluminum-based phosphate adsorbers before without issues as well (as have many). Not a study, but I think we would have heard of issues when they were common by now. Liquid phosphate adsorbers based on Lanthanum (La) are known to cause tangs some issues though.

 

[Baldyreef]

The Scoly does seem to be doing better. I'm less worried. It came mounted to a small rock. How does it grow? Does it need to be on a bigger rock or just give it room around to spread out on the sand?

not really no they just inflate to sit on the sand bed, many come with a very small bit of rock or just the skeleton to sit on the sand