made the mistake of buying fish too early and for the first 3 weeks everything was great then my tank got this white cloud that consumed it so I used acurelF and it cleared it up so I wasnt sure where I was in my cycle but now its 5 week since tank is set up I purchased a black ghost and 3 clown pectis(I think thats what they are snake like) when I purchased them yesterday I tested the water and the ph was 7 and amonnia 0.25 I went to work in the morning and I came home and my ph is 6.6 and amonnia 4.0 to 8.0 and water is back to cloudy I need help before my black ghost dies I dont know what to do