so i'm changing the water in my 125 and i forget to take out the drain thing in the sink. 60 gallons of water get on the floor and there is fish crap everywhere. so after cleaning that up with various cleaning products, I wash my hand extensively. I proceed to my other tanks. so i finish my water changes, and then go to bed. everything is fine the enxt day except one thing, half of my exodons are dead. I check the water, it's perfect. i bring a sample to my lfs, they say the water is as clean as it gets. no ammonia, nitrates, nothing. the ph is normal as well. hardness is ok. everything, i come home, 2 more dead. im down to 5 exodons now and 2 of them are gasping. there is an AC110 running on this 30 gallon planted tank. i have this ecocomplete soil down as substrate, could it have had stagnant water in it? i dont know what happened. and needless to say, im furious, and i cant even punch a wall because I messed my wrist up.... like I said, bad Karma all around.