Ok just bought a 1.5 gallon tetra cube with filter currently no fish in it...I plan on putting my frog o sphere frogs in it...I'm running the with nothing in it and tank seems a little hazy after a week I guess this is the bact. bloom. Also what fish and how many can I put with the 2 frogs? guppies or tetras? in my 1.5 gallon cube.