I finally tested my water lastnight after receiving the master test kit (about 3 weeks ago... hehe ... busy with my final exam ... yack !!)
Here is the result:
ph low range: 6.6
Ammonia: 0
Nitrite : 0
Nitrate : 0
I have 29GL tank with CO2 system, 65W runs 9 hours a day. ah I just have an XP2...