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Thread: Mixing nutrients question ?

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    Default Mixing nutrients question ?

    Hi - little confused here - hope you can help...

    I'm ready to purchase a dwc system that has 7x55litre buckets with a capacity of 385litres naturally. I want to add a float valve to the main 55litre reservoir with an additional 100litre water butt. Now - my question is how do you evenly mix the nutrients around the system - including the 100litre water butt? cheers..........

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    Airstone pumps I should imagine.
    The flow of bubbles and water will keep it mixed
    And moving stopping any algae build up also



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    Hi - thanks for the speedy reply - yeah the system has an air pump/stones - its a dwc undercurrent so is a well circulated system. How would the nutrients mix into the additional 100litre water butt though?? I'm thinking of using a second pipe going back from the 55litre reservoir to the water butt with its own independent pump - but it would overflow if float valve is closed. An overflow pipe would have to be added. So three pipes going into and out of the water butt - one pipe from water butt to 55litre reservoir with float valve keeping a constant level - second pipe from with its own pump feeding from 55litre reservoir straight into 100litre water butt - then the overflow pipe from water butt back into 55litre reservoir. Seems complex though - not sure if this is the way its done - thoughts please anyone? cheers.....

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    Just realized it wouldn't overflow - unless a blockage or float valve got stuck.

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    I'm not a water grower so can't really help
    But sure someone will be along to advise you : )

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    I am not really sure what you mean, generally with hydro growing you need to do a complete res change at least once a week.

    I have a 50 litre recirculating system, I also have a 60 litre water butt for res changes. I fill my 60 litre external water butt, and mix the nutrient in this, I then empty the res in the tent. I then just pump the feed from the water butt, into the res in the tent.

    I have 1 x air stone in my water butt, and 4 air stones in my reservoir, so this keeps the nutrients well mixed

    Hope this helps.


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    Hi - thank you for the reply. Yes - what you describe is what I did with my first grow. I found that when root mass increased more frequent nutrient changes was required. However I want keep all of the roots submerged in nutrients all of the time using a float valve and second reservoir to keep the system topped up. This is why I would like the second reservoir to be able to mix its nutrients evenly into the main system. I don't think you can simply top up as the mix will be different? This is the confusing part lol.

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    Quote Originally Posted by mfm3677 View Post
    Hi - thank you for the reply. Yes - what you describe is what I did with my first grow. I found that when root mass increased more frequent nutrient changes was required. However I want keep all of the roots submerged in nutrients all of the time using a float valve and second reservoir to keep the system topped up. This is why I would like the second reservoir to be able to mix its nutrients evenly into the main system. I don't think you can simply top up as the mix will be different? This is the confusing part lol.
    I put a water pump in my res tank, turn it on when mixing nutrients up it works a treat.

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