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what fish can i put in a 20 gallon tank

This is a discussion on what fish can i put in a 20 gallon tank within the Freshwater and Tropical Fish forums, part of the Freshwater Fish and Aquariums category; --> Addition of live plants (and accompanying substrate) might bring in some beneficial bacteria and so speed up the cycling process. From my limited reading, ...

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what fish can i put in a 20 gallon tank
Old 07-21-2012, 04:19 AM   #31
 
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Addition of live plants (and accompanying substrate) might bring in some beneficial bacteria and so speed up the cycling process. From my limited reading, plants seem able to absorb ammonium, though not ammonia, through leaves and utilize nitrates through their roots; nothing I found suggested that plants could keep up with metabolic wastes produced by fish and thus replace a fully cycled biological filter.

I really don't like to contradict people on open forums (my apologies, Vark!) so I will gladly "eat my hat" if I am wrong. I will also widely advocate the addition of live plants to new systems!

My usual suggestion to speed the cycling process is to borrow media from an established (and healthy tank) and insert it into your own system where it can inculcate the new aquarium.
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Old 07-21-2012, 06:40 AM   #32
 
I was told that the with plants you could skip the whole cycling part or at least make it faster then 6-8 weeks because the plants will take in the Nitrite and ammonia in the tank and the CO2 that the fish give off I will be putting more plants in there that are fast growing and then in a week I will check the chemls in the tank and post my readings to see.
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Old 07-21-2012, 08:15 AM   #33
 
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I read that post, too, and since this is your first tank I just wanted to let you know I am not sure the information was accurate. I did a little reading, as I mentioned, and did not uncover anything that assured me that plants can be made to work in place of a fully cycled filter.
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Old 07-21-2012, 08:18 AM   #34
 
I am going to keep testing it once I get the kit for it and when the lvls are right I will then add in the fish, but I still like the idea of having real plants in there because IMO they look better then the fake ones but takes for the heads up.
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Old 07-21-2012, 09:50 AM   #35
 
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Quote:
Originally Posted by sidluckman View Post
I read that post, too, and since this is your first tank I just wanted to let you know I am not sure the information was accurate. I did a little reading, as I mentioned, and did not uncover anything that assured me that plants can be made to work in place of a fully cycled filter.
It may be a misunderstanding as to exactly what occurs, so I'll try to elucidate.

All new aquaria will go through a "cycle" during which nitrifying bacteria (Nitrosomonas and Nitrospira) become established. This takes time, and rather than go into all that, have a read of my article:
http://www.tropicalfishkeeping.com/f...quarium-74891/

The benefit of live plants, provided there are enough of them and they are reasonably fast growing (floating and stem plants generally supply this), is the uptake of ammonia from day one so that fish can be put in the new tank with no harmful effects to the fish, provided they do not overwhelm the ability of the plants. Lots of plants and few fish, with the fish increased gradually. There is thus no waiting, and no detriment to the fish. The bacteria will still establish, but minimally by comparison to having no live plants. You will not detect any ammonia or nitrite using our test kits because the ammonia is grabbed quickly by the plants and any left gets taken up by Nitrosomonas bacteria.

That covers the initial "cycling" period. Long-term, live plants can replace the filter, again provided there are sufficient plants and the fish load is balanced. Plants can take up pretty much anything likely to appear in the aquarium in the way of natural toxins. Nevertheless, most of us do have a filter; the primary task is water circulation and removal of suspended particulate matter (the mechanical filtration aspect). Chemical filtration (carbon and such) is never required with plants, since this competes for nutrients. And biological filtration will occur in any aquarium, but should not be encouraged. The plants will do the job if allowed to.

Byron.
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Old 07-21-2012, 09:59 AM   #36
 
Thanks Byron you have been a big help I will be picking up some Giant Hrgrophila and some Wisteria when i get off work to put into my tank when i get home.

This should help cycle the tank because they are both fast growing plants right?
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Old 07-21-2012, 10:11 AM   #37
 
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Thanks Byron you have been a big help I will be picking up some Giant Hrgrophila and some Wisteria when i get off work to put into my tank when i get home.

This should help cycle the tank because they are both fast growing plants right?
Yes. They will need fertilizing with a complete liquid fertilizer. Fast growing plants need more nutrients and good light.
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Old 07-21-2012, 10:15 AM   #38
 
What brands would be best for those plants?
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Old 07-21-2012, 11:16 AM   #39
 
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What brands would be best for those plants?
I know of two complete fertilizers in liquid. Brightwell Aquatics' FlorinMulti, and Seachem's Flourish Comprehensive Supplement. I use the latter because I can buy it in bulk (2 litre jugs) and save a lot of money long-term.

Whichever you get, make sure it is the product specified; both manufacturers have several different products in their respective line.

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Old 07-21-2012, 11:25 AM   #40
 
The guy at my LFS told me not to worry about that yet as I am still cycling the tank right should i get some later down the road like a month after it is done cycling?
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