水草情迷

i just want to see which kind of tester do u use to test PH?

1. PH pen
2. PH test tube
3. PH meter
4. PH test paper

which one is the most valuable to buy and easy to use?

我只係用試劑
因為平$25/125 test

但如果比我知道邊隻ph筆會唔易壞同準確
都係買筆
因為真係方便

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i use pH test kit - Tetra,
and pH pen

agree

我用 PH meter ,可以無時無刻都看到

but which brand u use ar? is it accurate ga? also how much?

i've seen a lot of China made meter ga...plactic packing, selling $380 jar...but as other said, might not be accurate as always.is it true?

what is ur 試劑's brand ar?

Nutrafin (Hagen)
有兩款
1. 淡水專用 $25/225 tests (pH 6-7.6)
2. 咸淡水 $30/100 tests (pH 4.5-9)

i use pinpoint pH meter around 6 months
everything is ok
$--around 700~800
this link u can see
http://www.americanmarineusa.com/

it can control ur PH or just a meter for checking?

To control ph should be PH controller, PH meter is only for reading.