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January 26th, 2009
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| | Fish Bum
| 90
In a 90 gallon tank, what would be the max number of fish? if there are fish like.. danios, tetras, rasboras.. smaller sized fish you know? maybe a couple larger fish, along with invertes like shrimp. live plants as well, not sure if that has any effect on the number. | 
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January 26th, 2009
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| | Fish Master
| There's no max number of fish - at least not a set number.
It varies from tank to tank - what species you want, how much filtration you have, etc.
It would be helpful if you posted a stocking list of what you would like to have, and we can advise you from there. | |
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January 26th, 2009
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| | Fish Master
| depends what kind of fish you want, for example, if you just wanted neon tetras, i'd get LOTS of them! | |
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January 26th, 2009
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| | Fish Keeper
| yeah i agree with the post above (Amanda), the general rule for small fish is about 1inch of fish per gallon but its just a guideline. | |
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January 26th, 2009
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| | Fish Addict
| The "rule of thumb" used to be 1" of fish length per gallon of water. However, more people actually are now giving thought to how much filtration they can provide for the tank, with at least 8X tank turnover per hour, the bio-load of the species in the tank, and as you asked the enviroment for hiding and schooling. Since obvoiuosly shrimps produce waste it has to be factored in. Research the species of fish you want in the tank, if they are schooling fish, try to identify a recomended number that you will need to get - but with schooling fish imo the larger the number the better of they are and less stressed, thus better color and behaviuor. Essentially research, research, research, by reading threads on this site and others, and talking to LFS's that you trust. | |
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January 26th, 2009
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| | Fish Bum
| Ok, thanks alot everyone, as for a filter.. what would be good for a 90g tank? the bigger the better right? | |
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January 26th, 2009
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| | Fish Master
| Yeah, you can never overfilter.
A possibility could be 2 medium sized filters also. | |
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January 26th, 2009
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| | Fish Addict
| For filtration what i go for is both the biological, oxygenation and media (mechanical to remove pices of food etc.). I would recomend that you have at least 8x turnover of the entire tank in one hour. Secondarily, i always try to buy the best/most filtration i can afford at the time ithe tank is set up. Always be aware that manufactures state flow rates that are max, but when i have placed meters on various filters i use the flow rate is always lower due to enviromental and mechanical impacts. So imo i would go with at least 900 gallons per hour of filtration, of whatever filter or combination of filters you use. As an example for my 100gal, i use 2 HOB 280's for mechanical filtration and oxygenation, ans 2 eheim 2229's wet dry filters for biological filtration. Thus on this tank, i have approx. 1000gal an hour turnover - at least according to my flow meters. | |
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January 26th, 2009
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| | Fish Addict
| If you want your tank like mine(most small, 3-4 large) you could fit, maybe 50-80 ish fish? nah, i would say 70 max.
Maybe:
10 neon tetras
6 rasboras
6 danios
3-4 large fish (no bigger than 5")
4 guppies
4 cherry barbs
And the rest is for you to decide!  | |
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January 26th, 2009
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| | Fish Bum
| Ok. thanks again everyone | |
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January 26th, 2009
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| | Fish Addict
| Oh, i have a site to reccomend, www.fishlore.com LOL!!!!!!!!! | |
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