How large should the 'Cleaning Crew' be? - The Planted Tank Forum
 
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post #1 of 11 (permalink) Old 07-23-2009, 08:12 PM Thread Starter
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How large should the 'Cleaning Crew' be?

30 gallon long. 1.75 W/G. Currently my crew consist of 3 oto cats and 5 ghost shrimp. Is that enough? Too much?

Feedback appreciated as always.
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post #2 of 11 (permalink) Old 07-23-2009, 08:34 PM
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I don't know about "should" but I have 6 pygmy cories, 3 otos, 3 amanos and however many zillions of RCS as clean-up crew in my 30g.

I think it depends on how the tank looks too. Is there lots of gunk you have to syphon off the bottom? Algae growing faster than the Otos can eat it or does their food need to be supplemented as it is?

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post #3 of 11 (permalink) Old 07-24-2009, 03:13 AM
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my 2 ottos handled my 20 gallon high admirably

when i added my dwarf shrimp, i realized.. the dwarf shrimps werent needed anymore but added them anyway
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post #4 of 11 (permalink) Old 07-24-2009, 03:31 AM Thread Starter
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Got home tonight to discover one of my otos was dead. Noticed last night that one would eat and then swim to the top extremely fast, then retun to eating. Don't know if that's the one that died, but it seams likely. No erratic behavior or signs of stress from any of the others. Nitrates and Nitrites are barely measurable with my cheap test kit(dip and compare colors). I'll get a better one tomorrow.
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post #5 of 11 (permalink) Old 07-24-2009, 04:07 AM
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You need to look at the cleaning crew as a dynamic number. A tank that has a lot of algae will require a lot of algae eating animals. A tank that has no algae - much less.

The best algae eating animal there is so far is the Amano shrimp. They can handle virtually all types of algae (including Cladophora and BBA) IF the number of shrimp corresponds to the algae infestation.

Here's an example, from personal observation:
200 Amano shrimp in a 25 gallon tank will completely eat a Cladophora mat that is 2" thick in about 3-4 days.

Of course stuffing 200 Amanos in a 25 gallon tank is a pretty ugly sight. It's also crazy to put so many animals in such small volume. We import rare fish and shrimp so we take great care of the tanks. It takes a lot of effort to maintain so many animals in such a small volume. But my point is that it seems that no algae is safe if the number of algae eating animals is appropriate.

Otos and SAEs are "old school" algae eaters. They are not very effective. Look for the newly imported gobies, Red Lizards, Neritina snails, and Garras. Stiphodon and Syciopterus are the genuses of the gobies that will eat dust algae and BBA.

--Nikolay
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post #6 of 11 (permalink) Old 07-24-2009, 04:55 AM
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It's normal for Otos (as with most other catfish) to rush to the surface for air on a regular basis. Helps them regulate their buoyancy in the water.

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post #7 of 11 (permalink) Old 07-24-2009, 08:13 PM
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Quote:
Originally Posted by niko View Post
Otos and SAEs are "old school" algae eaters. They are not very effective. Look for the newly imported gobies, Red Lizards, Neritina snails, and Garras. Stiphodon and Syciopterus are the genuses of the gobies that will eat dust algae and BBA.

--Nikolay

+1 on all of that, I'm not a fan of SAE's at all but love Nerite snails to death. I'll be setting up a breeding tank for them soon.

By 'Red Lizards' do you mean the Whiptail L-10A? I haven't seen that one yet I'll have to look around.

- Brad

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post #8 of 11 (permalink) Old 07-25-2009, 02:20 AM
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Quote:
Originally Posted by bradac56 View Post
By 'Red Lizards' do you mean the Whiptail L-10A? I haven't seen that one yet I'll have to look around.

- Brad
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post #9 of 11 (permalink) Old 07-25-2009, 04:39 AM
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post #10 of 11 (permalink) Old 09-13-2009, 04:12 AM
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Somewhat of a necro, but does anyone have issues with Amano leaving the tank? Mine's open-top and the last time I got ghost shrimp we found em all over the floor.

Missus has forbidden shrimp of any type until i can prove they won't take the leap of glory...
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post #11 of 11 (permalink) Old 09-14-2009, 01:24 AM
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Quote:
Originally Posted by oldweasel View Post
Somewhat of a necro, but does anyone have issues with Amano leaving the tank? Mine's open-top and the last time I got ghost shrimp we found em all over the floor.

Missus has forbidden shrimp of any type until i can prove they won't take the leap of glory...
Yup, IME Amanos are the worst about "going on walkabout"

Cherry shrimp aren't as bad.

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