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Does anyone use water from their fish tank on their veg?

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  • #1

    Does anyone use water from their fish tank on their veg?

    When I do a water change in our fish tanks I normally put the old water onto the plants, they thrive on it, must be the fish waste in there.

    I was wondering if it would be safe to use on vegetable and fruit plants etc.
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  • #2
    Yes, good idea. Fish excrete ammonia but it soon gets broken down in the tank into nitrates which is good for plants. Assuming you keep a freshwater tank and not a saltwater one. The veg won't appreciate salty water.
    Mark

    Vegetable Kingdom blog

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    • #3
      Yes, nothing like a bit of fish poo
      Warning: I have a dangerous tendency to act like I know what I'm talking about.

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      • #4
        Yes, a good friend of ours always uses his fish-tank water on his chillis and peppers. He was saying something about nitrates (or was it nitrites )... But his plants are thriving on it anyway

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        • #5
          Originally posted by SarzWix View Post
          Yes, a good friend of ours always uses his fish-tank water on his chillis and peppers. He was saying something about nitrates (or was it nitrites )... But his plants are thriving on it anyway
          Possibly both. The ammonia that comes out of the fish is broken down first into nitrites and then into nitrates. Any given bucket of used fish water will contain some of all three, mostly nitrates as this is what builds up (unless you grow water plants that is, they will use up the nitrates!)
          Warning: I have a dangerous tendency to act like I know what I'm talking about.

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          • #6
            my courgettes did wonderfully on the crap from the fish pond filter last year and the water all went on my veggies too when i cleaned it out

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            • #7
              Great, thanks folks.

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              • #8
                Don't overdo it or the fish will have to become amphibians

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                • #9
                  I keep goldfish in my water butt (to eat the mozzie larvae) and obviously they poop into the water that I use for watering.
                  All gardeners know better than other gardeners." -- Chinese Proverb.

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                  • #10
                    Originally posted by Two_Sheds View Post
                    I keep goldfish in my water butt (to eat the mozzie larvae) and obviously they poop into the water that I use for watering.
                    Can't you just put a lid on?
                    http://plot62.blogspot.com/

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                    • #11
                      Originally posted by Two_Sheds View Post
                      I keep goldfish in my water butt (to eat the mozzie larvae) and obviously they poop into the water that I use for watering.
                      Must make filling a watering can a bit of an adventure! How many times have you accidentally scooped a fish up? Crikey, I hope your watering can has a fine rose!
                      When the Devil gives you Cowpats - make Satanic Compost!

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                      • #12
                        Anytime I open the fish tank lid, my cat likes to drink the water.

                        FG

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                        • #13
                          ive watered my plants with the water from my two barrel ponds for a few years now and the plants seem to love it.

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                          • #14
                            I change my chooks water each day and water different plants with the residue each day.
                            They crap in it, plodge in it, drop food in it so it's usually pretty manky......ideal for plants methinks!
                            My Majesty made for him a garden anew in order
                            to present to him vegetables and all beautiful flowers.- Offerings of Thutmose III to Amon-Ra (1500 BCE)

                            Diversify & prosper


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                            • #15
                              Originally posted by Snadger View Post
                              I change my chooks water each day and water different plants with the residue each day.
                              They crap in it, plodge in it, drop food in it so it's usually pretty manky......ideal for plants methinks!
                              plodge???
                              (is that a technical term?)
                              Warning: I have a dangerous tendency to act like I know what I'm talking about.

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