I have a 32 gallon tank, which has bee up and running for almost 8 months now. I have had a rash of recent deaths in the tank. 3 platies and a white cloud minnow have died in the last 2 weeks. The platies went first and as they were old I assumed age. I have tested the water and all appears to be fine then the minnow just dies last night. I only have ammonia test strips and was wondering if they were good enough? I change 5 gallons every week, at the time i had 3 corys, 4 platies, 5 tetras, 5 rasboras and 5 white cloud minnows. Aqua advisor said I was changing enough water. Any ideas anyone? wiould I be better off with a liquid test kit to make sure the water is spot on? thanks for the advice.