am i in trouble? (ph and testing)

[bill109]

hello
i did some testing tonight and it good thing i did.
i have a fasTest and my results were a little diff this time.
its a 90 gal and the results as follows
ammonia. was at 0 then after about 20 min went up to .2 the instructions says to read it aftr 3 min wich it reads o. what do i take?
also my ph was a litttle low.. it was about 7.8-7.9 veryclose in between
i turned off the lights and have now fuge to keep my ph up at night. i only have one aquadisc of striped mushrooms
the lights are now off and the ph is going to drop so are my fish going to be ok?
im not sure about my tang. the clown,chromis,watchman shoudl be okay but the watchman im not sure im guessing.
whats your oppinions?

 

[hatessushi]

Just read the ammonia after 3 minutes like the instructions say. It can't be considered reliable after that. If you are concerned then take a sample to your LFS and have them test it.
Although your pH would be considered low by most I would say it is on the low end of 7.8 to 8.3 which is what sea water is depending on location whether it's in a reef (8.3) or in the open sea (7.8) or anywhere in between. My 90 gallon tank is most always 7.85 during the day and 7.8 at night. It's not bad but I consider the most important thing to be stable (about .1) which mine is.
Also, by the way my pH will sometimes drop as low as 7.79 at night even with the light in in the fuge. All my fish (diamond goby, coral beauty, maroon clown, kole tang and hawaiian trigger) are all healthy and my mushrooms look good and are splitting. I had 2 now I have 6. My feather dusters, Green Brittle Stars, Green star polyps are all heathy as are my silver branching Xenias, haitian anenome, and button polyps. all have good color and healthy