I need desperate help

Question
I have a 65 gallon tank. I just moved it from my living room to my bedroom. My main problem is my ph is at 6.  I do not know why and i am scared to add any chemical that might hurt my fish.  My secound problem is that now my fish has white spot on them.  I  have under gravel filter and a cascade 1500, a bubble curton in the back, and t5 ligthing for my plants.  I have 4 bamboo plants 2 large java fern, and some other ones i do not know there names.  Fish I have 1 kissing garoumi, 3 blue garoumi, 1 small pleco, 3 clown loaches, 6 white shirts 3 black shirts, 5 platie, 2 tetra, 4 angel fish.  Also i tested my water my ammonium is up to 2.0. I do not know if the rank is cycling again for moving but i love my fish.  I have to be able to get this under control or my husband ia going to make me give up on this hobby please help.

Answer
Flavia,  Make sure your heater is not broken. It sound like you are getting abit of ich. Now your pH that can be fixed with baking soda and water add abit at a time. All natural. If you are losing your pH quick often....Do this test .... take some tap water or whatever you are using and test it. Then take some of your rocks or aggregate and add it wait 2 hours and then test again. You may find that is the problem. Now as far as your ich....if you see anymore of it you are going to need a copper free parasitic. You should be able to find it in your local pet shop. You check the ingredients. NO COPPER. it will kill your plants. Let me know what happens. Good Luck, Tina