Hi all, I'm new to the group.
I currently have a 3 gallon tetra half moon tank with a sponge filter and heater and have purchased a 6.6 gallon hexagon tank.
Since his tank is fairly established can I just move him to the new tank using part of the old water and the rest new (already treated and waiting) water?
I do have a tetra filter that came with the tank but am unsure if I need that and the sponge one (which I really like).
My baby is very aggressive and I believe a tail biter as all I have in his tank are anemone's, a very well sanded cave, gravel and a hammock (which I think may have had a sharp underside so I curved it). I just think he doesn't live having a tail as much as he enjoys swimming. :). He has adorable dumbo ears!!!
PS. Thinking of switching out the gravel (typical multicolored) for marbles, should I wait until new tank is more established?