Auto dosing dry ferts? - The Planted Tank Forum
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post #1 of 4 (permalink) Old 03-14-2018, 11:09 AM Thread Starter
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Auto dosing dry ferts?

I know you can buy dosing pumps, but do they work with dry ferts mixed into a water solution? My EI solutions have alot of precipitates and need to be shaked before dosing. Also, they leave a thick residue in the dosing cap.

If the ferts are thinned enough, will the ferts stay suspended, or will they quickly gum/clog the pump?
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post #2 of 4 (permalink) Old 03-14-2018, 11:18 AM
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Of course you can use solutions made with dry ferts for autodosing, that is pretty much what all commercial fertilizers are. To get an accurate dosing your solutions should not have any precipitation whatsoever. If it has precipitation either the compounds reacted and produced insoluble compounds (read as not plant available), or their concentration is too high (make more dilute solutions) or mold has grown (put ascorbic acid)
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post #3 of 4 (permalink) Old 03-14-2018, 11:23 AM Thread Starter
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Quote:
Originally Posted by dukydaf View Post
Of course you can use solutions made with dry ferts for autodosing, that is pretty much what all commercial fertilizers are. To get an accurate dosing your solutions should not have any precipitation whatsoever. If it has precipitation either the compounds reacted and produced insoluble compounds (read as not plant available), or their concentration is too high (make more dilute solutions) or mold has grown (put ascorbic acid)
I wasn't sure if the EI ferts would stay suspended if thinned enough. Thanks.
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post #4 of 4 (permalink) Old 03-14-2018, 11:49 AM
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Yes, they will. You need 2 bottles at least, one micro one macro nutrients. The macro line may form some deposits at the end over time. Those are just remains from evaporation . You can put them back in the tank

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