I recently acquired a new fish tank set up, 20 gallon tank, came with filter and heater. Set it up with 10 neon tetras, 2 corys, and 5 and 5 of two ofter types of Tetras.
Now I am down to 1 cory a 6 bigger tetra's. So many deaths. I have also had just a huge bloom of algae. Went on vacation for a week and came back, the tank was just COVERED in Alga!
I have been cleaning the tank weekly, changing 20 percent like the guy at the pet store told me. But I dunno.. seems "fishy" to me.
I am thinking of staring over, getting new gravel, new fish and new filter. Any thoughts on this?