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Old 05-02-2012, 07:20 PM   #11
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Originally Posted by CaptainAhab
Been gone for awhile and was tooling around the site and have noticed that this seems to be a recurrnig theme (not just about crabs but all inverts)

"The crabs help get rid of the hair algea but the nutrients from the algea are still in the tank, now as crab turd. So the crab takes care of the symptom, but actually adds to the overall problem of too many nutrients."

I'm not sure where it comes from and I don't have any scientific proof but I would think simple biology takes over here. Living things consume food to extract nutrients that there body needs to survive. They excrete what they don't consume. To imply that it is a zero sum game would seem to be highly suspect at best.

To discourage cleanup crew additions because of the zero sum belief would also be suspect

If there is some science behind the statements, drop me a pm w/ the link. I'd love to edumacate muhshelf
IMO I believe the clean up crews do produce waste but it is minimal compared to what they are removing from the tank. If clean up crews were so bad we would not be adding them to a reef tank. Additionally, if they produce so much waste which only adds to the problem then why do we recycle our sea slugs? Do they not clean up the algae and then starve because there is none left? If the slugs only produced more waste then we would all have some cool looking ones in our tank.

Of course everyone is entitled to their own opinions- and I am all for saving a life (invert or fish) - but the important thing is to just fix the problem and not put a band aid on it. Having emerald crabs in a reef tank is a good thing. I say add the emeralds to assist in the removal of the green hair algae and cut back feeding and lights for a while.

Then again- its just my $0.02.

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Old 05-02-2012, 08:52 PM   #12
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I wasn't trying to say that they produce a lot of waste, just that they will add to the total waste being produced, in a tank that cant handle the load to begin with. And unless other measures are taken, besides CUC, it will only get worse.
I have a small CUC in my tank, and their purpose is to help prevent high nutrient levels by scavenging uneaten food, and hopefully avoiding algea outbreaks and poor water quality. Not to take care of a problem once it already exists
I did suggest to the OP that a couple Emeralds would help with the algea. IMO there are just more important things to be done to help prevent it in the future ( less food, regular water changes, monitor phosphates)

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Old 05-03-2012, 01:47 PM   #13
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For bubble algaa marine biologist recommended to me gettin an emerald crab. I got two and my tank was clean in no time

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bubble, bubbles, rock

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