Sure, ill try to help as far as i personally know.
.5 is concidered stress, so i am guessing the cycle is beginning.
the thing is you dont want to REMOVE the ammonia, but detoxify it for the fish. Ammo-lock by API can do this. Also i believe you should invest in Prime by seachem as your water conditioner for water changes.
Reason is that the bio filter needs ammonia to work. if you remove it or keep removing it the filter will take forever to extablish. a never ending cycle is not what you will want.
Ammonia will spike then get to 0, as this happens Nitrites will spike then wil go to 0. Then nitrates will be visibl on your test kit, and as long as they are less than 40ppm then you have finished your tank cycle. So a finished cycle will read 0 ammonia, 0 nitrites, and around 20ppm nitrate. It will likely take a bit over a month (6 weeks) for this to finish. have patience. LOTS of it.
water changes can be done initially about every other day, removing about 20% of the water and replacing it with aged, treated water. Use tap. treat it with prime and then leave it to stand for the day.
The reason to do it so frequently is to try and keep ammonia and nitrite levels minimum, so no harm is done to our fish. If you are using things like ammo lock, you dont have to change so ofen. maybe twice or once a week of a 25-30% water change is good.
You can test the water every few days initially to make sure nothing is threatening your fish, then just test it once weekly to get a vague idea where you are at. If you personally feel a need to test mroe frequently than that then do so by all means.
Good luck. Dont go bymy opinion alone, wait for some more feedback from other forum members too
EDIT: PH UP CAN BE A BAD IDEA! adding any chemical that raises the pH may not help because of pH rebound. you can change to a desired pH for a few hours, but then in a day itll end up going down again. You need a buffer. Buy a 8.2 pH buffer specifically designed for african cichlids. buffering has to do with KH, and if you had a test for that, things would be simple to understand.