UFOsasha wrote:

I have a 10 gallon tank with a dying plant, one goldfish and two of
those dark algae eater fish.
I noticed my goldfish's tail fin had a few "frayed" like pieces and a
scale or two missing on one of his sides.

I checked my tank, PH level around 7.5, ammonia was high- so I did a
partial water change, took dying plant out, let the water it sit a
couple of hours, and put then ammonia block in.

About 1 day later I again checked the water, PH normal, high ammonia
levels, so I added more ammoina block.

3rd day- noticed water temp had risen- ammonia levels dropped some, &
PH has drastically dropped also. 6.0 or lower...not sure what to do.
What should I do to bring it back up?
Why did it drop in the first place?

Also, how much should I feed one goldfish and two algea eaters?

--
UFOsasha

Not sure why it dropped, get a KH tester to ensure your water is buffered
enough.
Maybe the ammonia blocker is altering your PH. I'd do an immediate 50% water
change
though. Increasing PH is not as hard on fish as lowering it.