I'm not sure what the water parameters are right now but my care taker decided that over feeding the fish by dropping the frozen cubes right into my 24g nano with 2 fish in it was the right way to feed them with specific instructions as to feeding. This was done twice a day 2 cubes each time. Water is Seafoam green. I did a 50% change yesterday and am inquiring as to how soon I can do another to get the water back to, oh yeah, clear. As you can tell I'm more upset than anything with the care taker and could kill him. Please suggestions are needed.