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Thread: 90 gallon tank - How many Fish

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    Default 90 gallon tank - How many Fish

    Hey Guys .... I have a 90 Gallon tank stocked with the following
    10 - 4 inch discus
    34 -blue Neon tetras
    2 -black ghost
    2 pelcos

    I'm planning to get rid of one discus one black ghost and aff 4 pelcos ,would this be overkill ? If so what would be the optimum number of fishes ?

    Ps: 90 gallon tank with 450 gallon per hour canister , two large pieces of drift wood , one huge lava rock and half inch white substrate

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    Default Re: 90 gallon tank - How many Fish


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    Registered Member Ryan925's Avatar
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    Default Re: 90 gallon tank - How many Fish

    I have 8 in my 75
    Im not illiterate...only my phone's auto correct is

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    Default Re: 90 gallon tank - How many Fish

    Quote Originally Posted by Ryan925 View Post
    I have 8 in my 75
    So is it okay to have the other fishes around?
    Last edited by Shadow7x; 11-22-2017 at 09:48 PM.

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    Default Re: 90 gallon tank - How many Fish

    Quote Originally Posted by Shadow7x View Post
    So is it okay to have the other dishes around?
    Think it depends on a lot of factors. Are you saying you are thinking of adding 4 plecos? Pleco greatly add to bioload
    Im not illiterate...only my phone's auto correct is

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    Default Re: 90 gallon tank - How many Fish

    Ya , I thought they keep the tank alge/ diatom free ..

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    Default Re: 90 gallon tank - How many Fish

    Quote Originally Posted by Shadow7x View Post
    Ya , I thought they keep the tank alge/ diatom free ..
    Typically find that plecos will eat much more food than they eat algae. Aside from that they poop ALOT. You are talking about 6 the plecos in that tank with a full stock of discus? That seems like a very large bioload to me.

    Keep in mind for discus to grow to their potential they eat a lot which means they poop a lot. Water quality also has a direct effect on their growth so understocking is always better.

    If you have algae and diatom issues I would try to determine the source and fix that rather than add more plecos. Light and nutrients are usually your issue. Adding more of a bioload will most likely make things worse
    Im not illiterate...only my phone's auto correct is

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    Homesteader Adam S's Avatar
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    Default Re: 90 gallon tank - How many Fish

    Should probably ditch both ghost knives. Things are beautiful, but they will eventually need bigger quarters.

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    Default Re: 90 gallon tank - How many Fish

    Quote Originally Posted by Ryan925 View Post
    Typically find that plecos will eat much more food than they eat algae. Aside from that they poop ALOT. You are talking about 6 the plecos in that tank with a full stock of discus? That seems like a very large bioload to me.

    Keep in mind for discus to grow to their potential they eat a lot which means they poop a lot. Water quality also has a direct effect on their growth so understocking is always better.

    If you have algae and diatom issues I would try to determine the source and fix that rather than add more plecos. Light and nutrients are usually your issue. Adding more of a bioload will most likely make things worse
    Okay I'll cut out the pelcos then , the diatom issue I think is because the tank is newly set up ,couldn't properly pinpoint.

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    Default Re: 90 gallon tank - How many Fish

    Quote Originally Posted by Adam S View Post
    Should probably ditch both ghost knives. Things are beautiful, but they will eventually need bigger quarters.
    The tank is 4 feet In length, no chances for the ghost ? They are soo adorable

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