Average Reviews:
(More customer reviews)if your growing plants. then one of these is very handy. i ordered 5. and according to professional growers. ph test kits such as these are very suggested because they are very accurated. although expensive ph meter/ or test pens are also good, they are expensive around 80 and you can use it for a certain amount of times then you have to calibrate it again to increase the potency in accuracy. I avoid doing that because a good digital ph is like 80+ and plus the calibration to calibrate it back to default is extra. so i purchased 5 of these to get free shipping and got it. and each pack works for 250 times or 250 tests. so this is definitely a good deal to get. before you order make sure you find out the ph level you need to achieve for either your plants or fish tanks. instructions seems tricky at first but look at the same card. fill water till line. 3 drops. shake it up. and match colors.
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