Hello everyone, need some advice, here's the story... I had a smaller tank (10G) and decided to go big so I got 55G tank and set it up. I made a newbie mistake (as I am still kinda new to the tropical fish) and used the sand substrate from my smaller tank without rinsing it before transferring it to the new one. So my new tank is slightly cloudy, I take a water sample to my local petsmart and have it tested and the guy there said all the water parameters are perfect except the PH is too high for my fish and I have slight traces of ammonia. Now what he told me to do makes absolutely no sense to me.... He told me NOT to do any partial water changes for at least 8 to 10 weeks and to cut down the feedings. I normally feed 2 times a day enough that they can all eat within a couple of minutes. The pet store guy said to underfeed them and cut it down to once a day and only what they can eat in 30 seconds!!!!! Does this sound right? I have 5 TigerBarbs 4 Angelfish and a rainbow shark, and it usually takes the angels a little longer to eat. Im afraid if I cut it back that much they will either starve or it will stunt their growth cause they are still juvenile. What should I do???????