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Thread: Using fish tank water ?

  1. #1

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    Default Using fish tank water ?

    Hi all, I've been reading how some people are using fish tank water and seeing great results, is this a thing anyone does here and can give me more info?

    My pal has a tank that he changed 45l of water every week, he has gold fish in there but its a big arse tank!

    Would be interesting to see what people think

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  3. #2

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    Got no info,but you can grow using a system that runs through a tank of fish using the fish waste to feed the plants


    "Patience is bitter, but its fruit is sweet."

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  5. #3

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    I have often used the fish tank water to water my house plants. I like more control on the input of my cannabis though. It feels like each fishtank would generate different levels. If you don't have the equipment to test them (you don't) then you'd have to spend quite some time wit trial and error to dial it all in.

    Cheers
    B


    "The footsteps of the farmer is the best fertilizer."

    Welcome to The Barnyard

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  7. #4

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    I'm all for it in soil. I would wait until you have a couple sets of full fan leaves and limit the amount and frequency according to the size of my pot. Small pots would get an occasional treat. Large pots would get a meal every three or four waterings.

    Edited to add: If my plants are still a healthy green at the beginning of flower I would stop using it at that point. If they start to fade hit them one last time.
    Last edited by Sun&Soil; 07-11-22 at 10:12 PM.

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  9. #5

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    Quote Originally Posted by LethallMonkey View Post
    Hi all, I've been reading how some people are using fish tank water and seeing great results, is this a thing anyone does here and can give me more info?

    My pal has a tank that he changed 45l of water every week, he has gold fish in there but its a big arse tank!

    Would be interesting to see what people think

    Sent from my SM-G973F using Tapatalk
    So did you try it, my friend?

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  11. #6

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    oh dip, I took a picture of my high-tech fish poo watering system and forgot to post it.

    This is a filthy filter sock from the sump that I'm swapping out for a fresh one. I like to pop it right in that jug, then fill it with water and then go fertigate everything in the house. They likes it!

    Click image for larger version. 

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    Cheers

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