Favia brain looking strange

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Cksnffr

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Aug 5, 2013
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Hey all--I'm in the process of converting my FOWLR tank (200g DT, 170g of sump/fuge) into a reef tank. I added my first LPS about five days ago. Here's a photo of it today:

http://imgur.com/M9Vl4YG

You can see some erosion/ulceration/something on the bottom right and then just a bit above that. I don't think I have anything in the tank that would snack on the coral--although I suppose it's possible--so I wonder if you can identify what's going on here. Right now it's placed in what I would describe as moderate light and moderate flow. Water params are 0/0/10, and my Ca/alk/mag are somewhat low (350/7.8/1200) but I've been bringing them up this week. (I doubt Ca/alk/mag would cause this in 5 days anyway.)

Any insights would be most appreciated.
Thanks!
 

Cheech

Global Moderator
Jan 13, 2000
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Montreal, Canada
What lighting do you have on the tank right now and what do you consider moderate light? My first thought would be that it's a lighting issue (considering how fast the coral's been affected.)

If it isn't already, place the piece on the bottom of the tank but in an area where it still gets moderate flow, and if you think the lights may be an issue, cut down by a lot, acclimating very slowly by increasing lighting intensity daily.

Here's a good read on favias that you might want to read.

http://www.netpets.com/fish/reference/reefref/favia.html

Good luck! Let us know how it goes!
 

Gregg

AC Members
Oct 29, 2013
86
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California
The references article about Favia corals was an excellent read! :dance2:

I also think lighting may be at least part of the issue and certainly a starting point to look at

Adding a more blue light, maybe a 20,000 K would be a good starting point or adjusting/supplementing your light to include a higher blue spectrum

Here is a good read about this subject:
http://www.aquarium-pond-answers.com/2012/03/pur-vs-par-in-aquarium-lighting.html

G
 

Cksnffr

AC Members
Aug 5, 2013
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Hey guys! I'm running three Ocean Revive full-spectrum LED fixtures about 8" off the water. They are at 55% right now.

I'm new to proper reef lighting, so the idea that I'd actually have too _much_ light is new to me. I always used to have too little to support corals.

I'll move it down lower and see how it responds. Thanks!


Sent from my iPhone using MonsterAquariaNetwork app
 

Gregg

AC Members
Oct 29, 2013
86
5
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California
I would try different levels with your LED fixture.

It is worthy of note that the Ocean Revive is not of the best PUR for photosynthetic life

Reference for Ocean Revive Review:
http://aquariumopinions.com/2013/12...evive-evergrow-led-lights-for-reef-aquariums/

Also, any time you adjust the output with an LED fixture using current reduction instead of PWM, which is how the Ocean Revive is controlled, there are some spectral changes too
Reference:
http://aquariumopinions.com/2013/07/07/aquarium-led-lights-controllers-what-is-best/

G
 
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