i was gone for 3 weeks and i have a 10 gallon tank...and the person that was suppose to clean my tank never did. Now i have red cyno...i think...all over my tank. It has covered my zoos and gsps and my srooms are starting to bleach...what do i do. I need some help...I have had this tank over 2 years and i have never had any cyno or any problems and now i do...i have done one water change since i got back...which is today, Jan 20th...i left dec. 24...what is the best way to fix everything...it used to be so heathly. I need help.