hello! I am very new to "fish keeping" and I recently set up a new 10 gallon tank. this is my second tank, my first was a 3.5 gallon TopFin tank with 2 male guppies and a mystery snail. all 3 of these pets died in the first three hours due to what turned out to be too much water conditioner. I then waited about 2 weeks to clean out and re-set up my tank. I then trusted the employees at petsmart (I now realize they have no idea what they are talking about) and I bought an apple snail and 3 glofish danios. they got aggressive and we had to return them. so, I bought a bigger tank and put my apple snail in the 3.5 gallon. I'm curious as to if I can put 3 platies in my 10 gallon and if there is a way I can speed up the cycling process. will a bubbler help? tetra safe start? anything helps! thanks!