Hey smackhead,
I would look into a digital pen type unit, you should be able to find many different makers. As for which unit to buy, I always go by you get what you pay for but look around a little more and you can find it cheaper! Hope the flush helps. :thumbsup:
sublime27 Reviewed by sublime27 on . Please help them theyre dying! please help me, ive described my setup as best i can, ive spent hours looking at posts on here and i still cant tell what is wrong with my plants :( -indoor grow -soil -vitamix soil -nothing added to the soil -Soil pH = 6.5 -Water source = tap water -Water pH = 6.5 -Age of plant = 4 weeks Rating: 5