Spacebarrel grow (auto NL)

spacedude900

New Member
Hey everyone. So I'm two weeks into my grow. Im growing in 7L airpot in a spacebucket with an actual ~42w led grow light from ebay, got some fans going and a carbon filter. Strain is Northern Light auto from Royal Queen seeds.
Overall I had a rough start, and it seems like its not going too well now too. I've got some brown spots on leaves and the last grow seemed like it was stunted somewhat. Tested PH with some paper strips, it looked like its ~8, so I mixed my reservoir with citrus acid and got it roughly to 6.5 (I know thats a crude way to manage PH, but its the only method thats available for me)
Anyone had any experience with ph testing strips? Can I trust them? I'm not really ready to get myself a 100$ ph meter, I hope I can get my stuff going with them strips.

First image after one week, second after second week
 

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