I'm not into hydroton myself. Rockwool cubes can be good, you just have to flood them at appropriate intervals. I have done quite well with it in the past. You can always do well with Dyna-gro nutes, and add in a few drops of bleach per gallon, keeps all the nasties away, and won't hurt a thing. Really, check out Homebrewer's journals here- the pics show just how good the results can be with a simple and cheap system that is dialed in, don't need a bunch of bottles of crap either. The issues you mention in the media, will probably eventually crop up in the water of your low pressure aero setups too. You'll need to address water temps and some sort of sterilizer such as bleach, or peroxide. Here is a recent bubbleponics setup someone mentioned in my thread: http://forum.grasscity.com/do-yourse...tep-step*.html
As you can see- it is very cheap, but seems to produce some nice plants according to the pics.


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My attempt at building a homebrew

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