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    Crap.. Just killed my rez culture, where to go from here?

    So I noticed one of my plants not keeping up with the rest; it looks fine, just not growing as fast. When examining the roots I noticed that half the roots had some very minor brown algae/rot or something on 'em. Currently I run Technaflora nutes + Great White + Humboldt MycoMadness @ 70F...
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    DIY RDWC/Undercurrent Design Help

    So i'm switching my setup from Aero/NFT to a RDWC-Undercurrent type setup to reduce complexity & maintenance tasks. I've got my buckets (9, in 3 rows of 3) & they've been drilled & fitted with 1" PVC bulkheads, but not connected to each other and this is where I needed a little design advice...
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    Help! Name that deficiency

    So I usually run NFT, but inherited a bastard plant in soil that came from outdoors which is turning out to be quite a problem child (Just recently conquered the spider mites 2-3 weeks ago). What am i doing wrong here? Any help would be greatly appreciated. These are from a cotton candy...
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    To sterilize or not to sterilize (cloner res I mean)...

    I run a couple of small bubble cloners using aerated tap water + VERY light nutes + great white. I've noticed that my res water seems to acquire musty smell after a few days but rooting/growth seems relatively unaffected. I was considering trying a regular schedule of small amounts of h202...
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    DIY Peristaltic Metering Pump

    Just whipped up a DIY peristaltic pump for expanding my automation setup & I thought I'd post some pics in case anyone gets a kick out of this kinda stuff. Electronics consist of an Arduino, small stepper motor, and an Easy Driver v4 stepper driver on controller duty. The Stepper/Driver/Pump...
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    h2o flow rate calculations

    Im building an aero/hydro system & need a little help in the math dept... How does one go about calculating pipe diameters?? if I have a container which has 14 sprayers (Typical microsprinklers from Lowes) spraying at 10 GPH each (140 GPH total) into it, how large of a diameter drain pipe do I...
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    Strange Behavior from clones in bubblecloner

    I am using a DIY bubble cloner with 2 10' airstones, sufficient air pump w/ adequate bubble coverage and neoprene EZ-Cloner pucks. I've had to toss numerous clones because they appeared to be dead on top and the stems in the bubble chamber were soggy. Now for the strange thing... Upon pulling...
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    1st Attempt Cloning Probs

    I recently made my first attempt at cloning and I thought everything went OK but there now appears to be some problems. The propagator is a typical DIY bubble cloner: rubbermaid type container approximatly 18" x 24" x 8', totally blacked out w black duct tape, 1" neoprene collars, 60 Gallon...
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    H20 Pump Specs

    I'm not sure if anyone has posted this information or not, but I thought I would post a little something on the subject of: Pump considerations when designing a Aero/Hydro system. Given that there are volumes of engineering books on fluid dynamics and pumps; I just wanted to disseminate the...
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