Hey Guys thanks for the speedy replies got the spare 4ft approx 100L tank set up just waiting for the floating sand to settle before some of the fish move to that one. Also got the API test kit and the readings for the tank were the same as before. The tap water has no ammonia in it and the PH is 7.6. Just so you know this tank they are in currently is approx 200L or 52gal. The 50% water change was just done and treated the new water with prime, do I have to wait after a water change to test again or can I test immediately?
Rocksor: Hopefully there will be a bigger tank soon just have to find one that fits the budget

Firestorm8215: There was a 1/3 water change each week.
Thanks Guys for the help
