hydroculture fertilizer rates

16 years ago

I've been converting all my "soiled" plants to a hydroculture setup. Most plants have been quite happy with it, but I'm having trouble understanding the appropriate fertilizer rates. I realize the absolute values are fertilizer brand-type dependent, but in general are rates relatively higher, lower, or no different than for soil or for recirculating hydroponics? When I switched one of three Justicia seedlings from soil to hydroculture, the two left in soil grew much faster from that point on. Of course, they didn't have the transplant to deal with, but on the other hand they also had to be watered (and thus got fertilized) much more frequently.

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Comments (4)

greystoke
16 years ago
Perhapsthis link may help you.
clibanarius
Original Author
16 years ago
I don't think I asked my question clearly. I'm not using recirculating hydroponics, I'm using hydroculture (semi- or passive hydroponics). It's not even typical hydroculture (a perlite-syperabsorbent crystal mix with a inch or two reservoir at the bottom of the pot), but I think the fertilizer use would be the same as for, say, Hydroton. But I don't have a clear sense of how much fertilizer to be using...
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greystoke
16 years ago
In that case I'm afriad I can't help you, although on the other hand that link I gave you may have some value. I'm using the info to get hydro nutrient levels for fruit trees.
plantboy_grower
16 years ago
hydroculture - kind of like the autopot, right? It's just that you are manually doing the watering instead of letting the autopot valve do it for you.

As far as I've heard the fertilizer rates are no different than they would be for hydroponics. I guess you may or may not want to flush with water every two weeks or so if you feel that some elements are becoming too concentrated - I'm not sure but it sounds like if you can find out how to get nutrient to work with autopot, that's what you should follow.

Here is a link that might be useful: Autopot