:?: Pleco questions - Tropical Fish Keeping - Aquarium fish care and resources

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post #1 of 31 Old 01-22-2007, 10:07 PM Thread Starter
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:?: Pleco questions

I am thinking of getting a pleco (or two? three?) for my 29 gallon tank. I have a couple of questions.

1. The store that sells them says they grow to 18 inches. Isn't that too much for my 29 gal?

2. I constantly have guppy fry in my tank. Will the pleco eat them?
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post #2 of 31 Old 01-22-2007, 10:20 PM
a common pleco is to big for that tank. Yes your lfs was right, they get that big and yes your right, 29 gallons is too small. Possible a bulldog plec?
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post #3 of 31 Old 01-22-2007, 10:22 PM
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i have heard of sailfin gibbyceps reaching 50cm!

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post #4 of 31 Old 01-23-2007, 02:11 AM
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If you're looking for an algae eating fish to help with maintenance in the tank, does it have to be a pleco? Otocinclus are a much better and safer option for a tank of that size. They are small (4 inches full grown) and eat a lot, not just in quantity, but also in different types of algae. Otos are live plant safe, peaceful, and fun to watch.
Do you have live plants? If not, another good option is something called a "mystery snail". They are a tropical (warm water) relative of the apple snail, so they don't reproduce to zillions overnight, get quite large (1 should be enough in up to a 30 gallon tank), are fun to watch, and also eat a lot of algae. Mystery snails are also peaceful, so won't bother the fish. DO NOT keep a mystery snail in a planted tank, they will devour the plants in record time.

In that size of a tank, the only pleco I would consider long term would be the bull dog, but keep in mind they need softer water. While the otos thrive in softer water, they are able to do well in pH of up to 8.0 without problems.

Dawn Moneyhan
Aquatics Specialist/Nutritionist
Juneau, WI
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post #5 of 31 Old 01-23-2007, 03:42 AM
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Bulldogs (Chaetostoma) i find can be hard to acclimatise, most tropical tanks run too hot for them (prefer 20-23 (68-74) degrees)) and highly oxygenated water and unless you are set up specifically for plecos (heavily overfiltered, meaning large currents) i don't think they are a group that feels particularly happy in a 'normal' tropical set up.

How about a good old bristlenose? Run of the mill ancistrus sp.3 should stay small enough for that tank (sorry i can't equate u.s. gallons to a tank footprint size a thats a bit of a guess)

Bettababy's suggestion is a good one, a small group of oto's would work well in a smaller tank, or if available in your area a small (say 3) group of Parotocinclus jumbo (lda25, pitbull pleco).

hth

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post #6 of 31 Old 01-23-2007, 03:45 AM
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Re: :?: Pleco questions

Quote:
Originally Posted by dominicanpapi82
2. I constantly have guppy fry in my tank. Will the pleco eat them?
Gump answered this one in another thread.
http://www.fishforum.com/viewtopic.php?p=36641#36641
Look for last post.

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post #7 of 31 Old 01-23-2007, 04:12 AM
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i have 3 common plecos in my 28 gallon. the largest bein 7 inches, as soon as they get too big for the tank ill b rehoming them, but i believe this can take a long time? ive had 1 for 2 years and hes not grown much at all, perhaps an inch
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post #8 of 31 Old 01-23-2007, 05:31 AM
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Quote:
Originally Posted by lioness501
i have 3 common plecos in my 28 gallon. the largest bein 7 inches, as soon as they get too big for the tank ill b rehoming them, but i believe this can take a long time? ive had 1 for 2 years and hes not grown much at all, perhaps an inch
from what i have been told, Sailfin Gibbiceps grow really fast and common plecs ( L21 ) grow quite slow..... :)

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post #9 of 31 Old 01-23-2007, 08:27 AM
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i would try Otocinclus instead of plecos. but thats just me.
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post #10 of 31 Old 01-23-2007, 09:27 AM
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Quote:
Originally Posted by flatcam1
from what i have been told, Sailfin Gibbiceps grow really fast and common plecs ( L21 ) grow quite slow..... :)
Commons (L. pardalis) growm quick as well flam, mine put on about 4 inch in 5 months.

Quote:
Originally Posted by lioness501
i have 3 common plecos in my 28 gallon. the largest bein 7 inches, as soon as they get too big for the tank ill b rehoming them, but i believe this can take a long time? ive had 1 for 2 years and hes not grown much at all, perhaps an inch
whats the dimensions of that tank please? and filtration? i would imagine that a 29gal means they are too big for the tank already (the biggest at least). Realistically, you would want that tank to be at least 14 inches wide, as a bare minumum. Might explain why they are growing slow.

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