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10 gallon ... 3 goldfish (i know, i know = too many!) so I want to change the water the maximum I can EACH DAY FOR THE next week... and then I'm just going to pwc every day by 20 percent.... now that I finally realize that's the problem, after reading up on this site. and as I understand it, i...

10 gallon tank, with goldfish: okay, so the water was clear as can be a few days ago... and i mistakenly did a pwc (with the gravel vacuum) and didn't pay attention and changed a good 50% of the water. started getting cloudy -- did all the tests (ph, amm, nit) and all checked out as okay...

finally bought a test kit and ammonia and nitrates levels seem within range.... but ph test is 6.0 (which is the lowest the test calculates, so could be lots lower I suppose) 10 gallon tank had it for a month or so 5 goldfish, one of whom is spending a lot of its time floating upside down last...

anything i can do? goldfish, 10 gallon tank, he's swims upside down, then tries to fight it and swims around for awhile... then floats up to the surface... anything to do? feed him, take him out and put him in cold water or something ? :(

I add hot water during the water replacement, but the temperature settles back every time to mid-60's. the fish store told me to keep it in the range of 70-80. i put a lamp next to tank, there is a hanging light over it too... but it just doesn't get warmer. i've had the fish for several...

Without knowing what I was doing... (what IS cycling?!) I cleaned out our green 10 gallon tank over the weekend -- took everything out and cleaned it put it back in. We have 3 goldfish and one of those bottom feeders. I put in AQUA plus.. and now the tank has gone from cloudy grey to GREEN...