Fried my ph meter somehow and have one truely beautiful female just into flower in a dwc. Any recommendations on a good one in the $20-$30 range? Only got enough test strips to last a week or two to hold me over.
I use Bluelab pens, they always work and have a higher build quality then most other pens I've seen. A little higher than your price range though, I think they're around $60 now.
http://www.amazon.com/gp/offer-listing/B0096N8OWI/ref=sr_1_32_olp?ie=UTF8&qid=1431055635&sr=8-32&keywords=ph+meter&condition=used mine works great, and cheapest you'll find without sacrificing quality just don't forget the calibration liquid
Think ill go that route, and I got calibration liquid at 4.0 and 7.0 already. My last one came perfectly factory calibrated though, but was a 15 dollar eBay Chinese one, measured really accurate comparing to test strips, but quality was shit. Broke the first time I dropped it onto carpet from waist high. The sucker fried lol