cleaning and tranfer to new tank

[lilkey625]

I new to the fish world and i have a 20 gal. long tank. I don't remember all of the names of the fish that i have but i know i have 2 balloon belly mollys that just had baby's, only 9 of then i got in time, i have 3 rosy barbs, 1 snail, 2 craw daddies, 1 frog, 4 feeder fish, 1 knife fish and 2 fish that i don't remember then names of. i have all of the right equipment but i cant keep the bottom of the tank clean. i vac the rocks about once a week (20% water) but whenever i go to readjust one of my live plates i stir up all kind of stuff. i just got a bigger tank which i think is a 40 gal and i don't know how to add 20 more gal's with out killing my fish. i think i need to read some kind of book about fish tanks if any one know a good one please inform me.

 

[WILDER]

Remove as much water as possilbe from the old tank, and add new water to fill it up adding declorinator.

 

[lilkey625]

is it safe to vac the gravel 2 times a week?

 

[WILDER]

It's ok if you have big waste producing fish or you tend to over feed, i do mine twice a week, but i would keep an eye on test results to make sure you are not over doing it.