So yesterday I decided to upgrade my 45 gallon tank to a 55 gallon tank that would fit my apartment a bit better (the 45 gallon tank was wider and short where the 55 is long and a bit taller). I started by taking water from my 45 gallon tank and adding it to my 55 gallon and also letting the filter media float in the tank for all the good bacteria to flow. Then I removed all my fish and put them into containers and buckets while I did the conversion.
I then took the play sand I purchased from Home Depot which i though i had rinsed very well and put it into the 55 gallon and then added my old substrate sand and plant substrate mix into it as well. The water was pretty cloudy but i trudged on. Put the 55 gallon up on my stand and also mixed in more water from the old 45. I then put the plants in to float as to add more bacteria into the water.
As I finished up I realized that one of my Otocinclus had hitched a ride on a plant and was swimming well inside the tank, which was still murky. My two 50 gallon filters were running nicely and I waited a few hours before I added the rest of my fish.
The water was still murky though so I decided to let it sit over night.
Today I came out to a slightly cloudy tank which was normal since it would be classified as "new". Did a headcount, everyone was accounted for. I decided to clean my filter media in a bucket of old tank water that was sitting over night and as I took the filter media out, a rushing cloud of murk came out overwhelming my tank.