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Old 09-10-2012, 09:57 PM   #61
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They do, but I've kept several smaller (and more coral-heavy) tanks and have never had this issue. Not saying you're wrong, just throwing it out there.
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Old 09-11-2012, 01:31 AM   #62
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Have you raised your Alk from 7.7. That is low for a reef. Aim for closer to 12. There is no "too high" really for Alk. Even over 12 is ok for corals and fish, but your pumps will start to build up calc deposits faster.
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Old 09-11-2012, 03:02 AM   #63
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Hmmm...are you sure you don't have anything eating on them? What about flatworms, or even a bacterial infection?
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Old 09-12-2012, 07:51 PM   #64
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Fort- I may have overstepped here but I'm one of those people that need a definitive answer to issues so I emailed your coral dilemma to a group that aquacultures corals. They are associated with a University so I figure if they can't help then who can right? They had a few questions. Could you post the answers so I can let him know? The following is what he has asked:

This is a tough one as there could be 101 different things to check but I've got a few questions to start.

- How long has the tank been running?
- What is the flow in the tank?
- How often are water changes done?
- Is he using RO/DI (if so, has he checked that or tried using water from a different source?)
- Running Carbon and if so how often is it getting changed?
- Was the tank previous used with Fresh Water and/or have any fish medications been used (copper is often a main ingredient in many medications and can leach into slicone).

There are many people that use that lighting successfully, so I would think the issue is related to water quality and can probably be fixed with time.

Cheers,

If you will let me know I will hit him back. Thx!
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Old 09-12-2012, 07:59 PM   #65
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Cool.

Tank has been running about 6 months.

Flow is 2 mp10s at around 50-70%

No meds ever used.

Tank is new, never used previously.

I do not run carbon.

I do a 10-15% water change weekly.

I am using RODI water. I check it every week and it has never been higher than 0 TDS.
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Old 09-12-2012, 11:16 PM   #66
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IMHO I would run carbon.
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Old 09-12-2012, 11:27 PM   #67
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I understand you here Fort. I'm way late to this party, but I had a similar problem. I started out by murdering atleast 500 bucks worth of coral once the tank was cycled and I switched tanks over. Issues continued from there. I am just now starting to get ahold of things.

My issue was lighting from my Radions. The AI Sols are as top of the line as Radions are IMO. My problem was they were just to strong. I've been spending the last 2 months continuing to adjust my lighting, in my case lowering their intensity. I'll try to get you some more specifics about how I'm running things, but I'm at work currently and it is my turnover day.

I've thought about all of the information provided and the only question that I don't see as being answered is this, how high are the lights off the tank? If they are 10 inch off the water, then it still might be that the Sols are putting off too much light and you are literally burning your corals. I have my Radions 20 inches off the water and have them set on a bell curve of intensity, peeking at 65% power at noon. Believe it or not, this is still too much for some of the corals! I had moved my maxima clam to the top of my scape 2 weeks ago. I woke up today and it couldn't take it anymore, this is after it was displaying what I thought was its mantle receding, and pulled up its foot and threw itself back onto the sandbed. I put it back on its rock, just on the sandbed where I had it originally, and it instantly opened back up like it was supposed to. I'm only hoping it isn't too late for it.
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Old 09-13-2012, 12:18 AM   #68
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I have them set at about 14" from the water. They peak at less than 50% intensity. Maybe I should try raising them some. I haven't adjusted the height at all since installation. I am right there with you. I hate to actually tally it but I am probably close to the $500 mark.
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Old 09-13-2012, 05:31 AM   #69
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There is nothing more frustrating than lights that are too strong. One of the things that is more frustrating is changing a bunch of variables at once until you get to the point where you feel like you're doing too much at once.

Why not just half the lights for a few weeks and see if there's a response? Try 25% intensity peak.
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Old 09-13-2012, 07:29 AM   #70
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I'm dealing with too much light as well. You would be surprised how little light your corals actually need, especially with led because they penetrate water so well. Mine are at 25% blue and 20% white but they are still bleaching a bit. Usually it's a combination of lighting and something else though, flow could be a problem.
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