What are /r/portlandhomegrowers' favorite Products & Services?

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something like this if it's necessary. hopefully i can do a diy version.

http://www.amazon.com/OGrow-Deluxe-Walk-In-Portable-Greenhouse/dp/B00ESKV0S4/ref=pd_sim_86_16?ie=UTF8&refRID=1XK014DRV17A27A0ZB45

I actually bought ph up/down, i've read some mixed reviews about using vinegar and baking soda. This is what I bought and has been working great: http://www.amazon.com/General-Hydroponics-GH1514-Control-Kit/dp/B000BNKWZY/ref=sr_1_1?ie=UTF8&qid=1423263655&sr=8-1&keywords=ph+up